US20140288992A1 - Identification, categorization, and integration of unplanned maintenance, repair and overhaul work on mechanical equipment - Google Patents
Identification, categorization, and integration of unplanned maintenance, repair and overhaul work on mechanical equipment Download PDFInfo
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Abstract
An automated interactive method dynamically identifies an unplanned maintenance task during execution of a planned maintenance task on equipment. A user device displays a maintenance menu system for data entry and access and provides an input relating to unplanned maintenance task discovered on the equipment. The unplanned maintenance task is associated with the planned maintenance task at least with respect to a location. The automated interactive method sequentially processes unplanned maintenance task information based on the input from the user device. A user such as a technician enters component data by answering an initial tailored question. An additional tailored question chosen based on a response entered by the technician to the initial tailored question is presented.
Description
- This application is a continuation of U.S. application Ser. No. 12/207,198 filed on Sep. 9, 2008, which is a continuation of the U.S. application Ser. No. 09/946,095, filed on Sep. 4, 2001 and issued as U.S. Pat. No. 7,440,906, the entire contents of which are incorporated herein by reference.
- This application relates generally to managing maintenance of equipment. More particularly, this invention relates to identification, categorization, and integration of unplanned maintenance repair and overhaul (MRO) work in an MRO business organization.
- A number of businesses focus their operations on the maintenance, repair or overhaul of complex equipment. Aircraft fleet and truck fleet maintenance are two commonly known businesses in this arena. In addition, other business that have to maintain expensive complex machinery and other capital equipment such as fully automated manufacturing plants also require the maintenance, repair and/or overhaul of their equipment to keep the business operations running profitably.
- Historically, within MRO business organizations, resource planning has been performed as a product of resource availability within a very near term time window, usually within weeks. The specific scheduling activity of MRO tasks usually is the product of responding to emergencies and matters of necessities to keep a particular end item, or a piece of equipment, in service. The result is that maintenance schedules often serve as general guidelines with critical resources being poorly allocated. Those resources typically need to be continually swapped and reallocated in an ad hoc manner to meet the emergency maintenance needs. This informality often results in both excessive equipment down times and excessive cost of maintenance.
- Scheduling systems have been developed to permit the performance of MRO tasks to a predefined schedule and support that schedule with the correct components, raw materials, information, skilled or certified personnel, tooling and facilities. The ability to reliably schedule MRO work is important to an MRO business and its customers. The predictability of schedule performance is one of the most difficult issues facing MRO management. Such predictability is the foundation of both financial and technical success for an MRO business.
- In the MRO environment, and especially while performing maintenance on more technically complex end items, the discovery of unplanned work (also known as “above and beyond”, or “emergent” work) during the execution of the original maintenance plan is problematic. Such unplanned maintenance work increases the level of difficulty of the effort, makes the supporting of the original plan much less efficient, and can create chaos within the work schedule. Of all of the tasks which must be performed once an item of unplanned work is discovered, the actual identification and categorization of the work content for that unplanned item is one of the most crucial factors in successfully dealing with the unplanned work and the schedule.
- Historically, the identification and categorization of such unplanned work has been manual in nature, open to great latitude in description (both as to accuracy and detail of the description), and time consuming for the mechanic or technician. Additionally, the time spent performing the essentially clerical task of identifying and categorizing the work is time lost from the execution of the already planned maintenance. This is a source of inefficiency and wasted resources.
- In those industries subject to extensive government regulation, the degree of detail required in the description of such tasks compounds the problem further. For example, commercial and military aircraft MRO operations must be scheduled and logged in accordance with government requirements. Disruptions to the schedule must also be logged and accounted. Manual records must be maintained for subsequent verification by regulators. The processing of these manual records, the reaction of the full business to the content of those records (purchasing of components; assignments of personnel; etc.), and the degree of human error represented by those records has made them a serious roadblock to the improvement of the MRO businesses.
- Further difficulty occurs when attempts are made to integrate newly identified and categorized work with a pre-existing maintenance plan. This difficulty arises in reference to the placement and sequencing of the discovered work within the pre-existing plan. This difficulty also arises in reference to the availability of the required components, information, tooling, and certified personnel to perform the tasks. A general rule of thumb is that over 50% of the tasks accomplished by an MRO activity were not part of the original workplan, and well over 60% of the time required to perform the tasks (and the cost associated with the maintenance business) are originally unplanned, meaning discovered during planned work execution.
- Accordingly, there is a need for improved methods and apparatus for identification, categorization and integration of unplanned MRO work in a schedule of planned work.
- By way of introduction only, the present invention provides an automated interactive method for providing relevant maintenance information to a technician assigned to maintain equipment. The automated interactive method includes entering, through a user interface, unplanned maintenance work discovered while planned maintenance work is under way and defining, in a database contained on a storage medium, a geographic location of the unplanned maintenance work. The automated interactive method also includes selecting, with a server comprising a processor and in communication with the user interface and the database, a task paired with the geographic location of the unplanned maintenance work. The automated interactive method further includes entering, through the user interface, maintenance data for integrating the unplanned maintenance work with the planned maintenance work by answering an initial tailored question corresponding to performance of the selected task, and presenting an additional tailored question chosen based on a response entered by the technician to the initial tailored question. The automated interactive method includes establishing, with a scheduler comprising a computer and in communication with the server, a resultant unplanned maintenance work data record.
- By way of introduction only, the present invention provides an automated interactive method for dynamically identifying an unplanned maintenance task during execution of a planned maintenance task on equipment and creating a corresponding unplanned maintenance task data record associated with the planned maintenance task. The automated interactive method includes displaying on a user device a maintenance menu system for data entry and access, receiving from the user device a selected geographical location of unplanned maintenance work discovered on the equipment. The unplanned maintenance work includes a first unplanned maintenance task associated with the selected geographical location and a second unplanned maintenance task not associated with the selected geographical location. The automated interactive method also includes establishing, through a task pointer, a first path to the first unplanned maintenance task on the equipment, establishing, through a location pointer, a second path through the selected geographical location to both the planned maintenance task and the first unplanned maintenance task, and displaying on the user device the first unplanned maintenance task and suppressing display of the second unplanned maintenance task. The automated interactive method further includes receiving from the user device a selection specifying the first unplanned maintenance task at the selected geographical location of the equipment, receiving from the user device a selected work category to assign to the first unplanned maintenance task, receiving from the user device a selected task type to associate with the selected work category, determining a task description corresponding to the selected task type, acquiring component data for the first unplanned maintenance task; and establishing and storing in a memory a resultant unplanned maintenance task data record including the selected geographical location, the selected item, the selected work category, the selected task type, the task description, and the component data.
- In another embodiment, an automated interactive method dynamically identifies an unplanned maintenance task during execution of a planned maintenance task on equipment. A user device displays a maintenance menu system for data entry and access and provides an input relating to unplanned maintenance task discovered on the equipment. The unplanned maintenance task is associated with the planned maintenance task at least with respect to a location. The automated interactive method sequentially processes unplanned maintenance task information based on the input from the user device. A user such as a technician enters component data by answering an initial tailored question corresponding to a selected type. An additional tailored question chosen based on a response entered by the technician to the initial tailored question is presented.
- By way of introduction only, the present invention provides in one embodiment a method for managing maintenance of equipment. The method includes identifying a planned MRO task and a first set of components associated with the task and determining a set of probabilities associated with a second set of components and indicating that the second set of components will require maintenance during the planned MRO task. The method further includes developing a plan for maintenance of individual items in the second set of components and, upon discovering a need for maintenance of at least one item of the second set of components, accessing the plan and integrating it with a plan of planned MRO tasks for the equipment.
- In another embodiment, the invention further provides a method for managing maintenance of equipment. The method includes discovering a component of the equipment requiring unplanned maintenance and identifying a location of the component. The method further includes identifying a category of work required for the unplanned maintenance, identifying a task description in the category of work to be performed, identifying a data code on the component, obtaining information from one or more databases associated with maintenance of said equipment, and scheduling the unplanned maintenance into a schedule of planned maintenance based on the information obtained from the one or more databases.
- In yet another embodiment, the invention further provides a system for managing the maintenance of equipment by integrating planned maintenance with unplanned maintenance. The system includes a network user interface in communication with a network and at least one storage device in communication with the network, the storage device being configured to store data from a plurality of databases. These databases in one embodiment include a Planned Work Probable Findings database including data of probability that, during planned maintenance of a first component, a second component will be identified as requiring unplanned maintenance, a Geography Definition database including data defining physical zones within which a repair task may be performed on a piece of equipment, a Planned Work Geography Locator database including data associating a planned MRO task to a physical zone, and a Component Tracking database including data selected from one or more of part numbers, component serial numbers and tracking numbers, the Component Tracking database being linked to a configuration database; and a scheduler for scheduling maintenance for a plurality of maintenance time periods; wherein the network user interface is configured to provide access to data from one or more database to describe a MRO task for a component of the equipment discovered to require maintenance; and wherein said scheduler includes logic to integrate the maintenance of the second component into a maintenance plan for said maintenance in a selected time period.
- In yet another embodiment, the invention further provides a method for managing maintenance of equipment. The method includes identifying a planned MRO task of the equipment and based on location of the planned MRO task, retrieving from a memory probable MRO tasks associated with the planned MRO task.
- In yet another embodiment, the invention further provides a computer readable equipment maintenance database storage medium. The storage medium includes first data defining planned maintenance items for equipment and second data defining probable maintenance items for the equipment. The second data is associated with the first data by geographic data for the equipment.
- In yet another embodiment, the invention further provides a method for forming an equipment maintenance database. The method includes identifying a planned MRO task for equipment and identifying one or more geographical areas of the equipment associated with completion of the planned MRO task. The method further includes determining unplanned MRO tasks associated with the one or more geographical areas and, in a database, storing first data related to the planned MRO task, storing second data related to the unplanned MRO tasks, and associating the first data and the second data by data related to the one or more geographical areas of the equipment.
- The foregoing summary has been provided only by way of introduction. Nothing in this section should be taken as a limitation on the following claims, which define the scope of the invention.
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FIG. 1 is a block diagram of a system for managing maintenance of equipment; -
FIG. 2 is a flow diagram illustrating one embodiment of a method of operating the system ofFIG. 1 ; -
FIG. 3 illustrates one embodiment of a planned work probable findings database ofFIG. 1 ; and -
FIG. 4 illustrates a question and response session gathering data to permit integration of unplanned work with a planned work schedule. - Referring now to the drawing,
FIG. 1 is a block diagram of asystem 100 for managing maintenance of equipment. As used herein, equipment refers to a machine or machinery that is formed of a defined arrangement of multiple components. A component means a component, a sub-component, an assembly, a system, or any other part of an item of equipment. A component may include, but need not include, one or more sub-components. An assembly may comprise a group of components that are integrated together. A material refers to raw material, a consumable, a component, a provision, or other equipment-related resources related to the performance of a maintenance activity. A maintenance activity or a maintenance task refers to at least one of maintenance, repair and overhaul of an item of equipment or a component of the item. - A component is not limited to mechanical elements and is broadly defined to include an electrical assembly, an electrical system, an electronic system, a computer controller, software, hydraulics, plumbing, and the like. Mechanical equipment includes heavy equipment and capital intensive equipment that is movable or fixed. Mobile mechanical equipment includes airplanes, buses, locomotives, ships, cranes, heavy trucks, earth moving equipment, and the like. Fixed mechanical equipment includes electrical power generators, industrial presses, manufacturing equipment or the like.
- The
system 100 forms a system for managing the maintenance of equipment by integrating planned maintenance of the equipment with unplanned maintenance for the equipment. In one exemplary embodiment described herein, thesystem 100 may be used in conjunction with a maintenance, repair and overhaul (MRO) system for performing MRO work on equipment. In another exemplary embodiment, thesystem 100 is used by a provider of MRO services for airplanes such as military and commercial airplanes. However, the system is not so limited and may be used in conjunction with any type of equipment or system. - The
system 100 includes acomputer network 102, auser interface 104, aserver 106, astorage device 108 and ascheduler 110. Thenetwork 102 may be any suitable data communications network, such as a local area network, wireless network, etc. Many networking standards have been developed and may be adapted for application as shown inFIG. 1 and described herein. - The
user interface 104 is in communication with thenetwork 102 and provides access to data and applications located remotely on thenetwork 102. In the illustrative embodiment, theuser interface 104 is embodied as a personal computer. In other embodiments, different types of data entry and data communication devices may be used. For example, in one alternative embodiment shown inFIG. 1 , a wearabledata communication device 112 is in communication with theuser interface 104 by means of awireless network 114. Thewearable communication device 112 forms a wireless data entry device in communication with other components of thenetwork 102. Thewearable communication device 112 permits an operator such as a technician or mechanic to access remote locations of equipment undergoing MRO work while remaining in data communication with thenetwork 102 but without the inconvenience of trailing data cables. Other types of data entry devices are known and may be adapted for use in thesystem 100. - The
server 106 provides a process workflow and messaging device for thesystem 100. Theserver 106 is in communication with theuser interface 104, thestorage device 108 and thescheduler 110. Theserver 106 may also provide data communication with other devices, such as other networks. - The
storage device 108 is in communication with other components of thenetwork 102. The storage device is configured to store data in a plurality of databases. These databases include a planned workprobable findings database 116, a planned work geography locateddatabase 118, awork description library 120, ageography definition database 122, astandard repair library 124, astandard parts list 126, a component part andserial number database 128,configuration databases 130 and possiblyother databases 132. Theother databases 132 may store ancillary information such as data and applications for use by components such as theserver 106 and theuser interface 104 of the network. The content and creation of these databases along with their use for scheduling planned and unplanned MRO work will be described in more detail below. - MRO work is organized by task. Examples of aircraft MRO tasks are “
overhaul engine number 1,” or “inspect brake pads on nose landing gear.” Many MRO tasks are planned and scheduled according to a regular preventative maintenance schedule or other planning basis. For each planned MRO task, an analysis is performed to determine what types of additional, unplanned MRO work may be found during routine maintenance within the same geographical area of the equipment. Relative probabilities are assigned to those possible work events and the planned workprobable findings database 116 is established from that analysis. One example of data organized in a planned work probable findings database is shown inFIG. 3 . - Defined categories of MRO work, such as mechanical, electrical, software, etc. are specified along with expected types of tasks relative to that category. For example, plumbing could be expected to have leaks of varying severity, including seepage, pooling, heavy volume, burst pipe, etc. As another example, structural failures could include task types such as corrosion, cracking, fastener loss and bending, etc. For each of these categories and tasks types, standard nomenclature is developed and category/task-type pairs are established. The resulting data is stored in the work
description library database 120. - For each unplanned work category/task type pair identified in the work
description library database 120, a standard method of repair is established and associated data is stored in the standardrepair library database 124. This library, in one embodiment, includes task descriptions, basic required tool listings as well as any special processing notes, skills or certifications required for the task, including safety warnings. This database also includes both schedule span estimates and cost estimates of the effort required to accomplish the standard repair tasks. - For each entry in the standard
repair library database 124, a generalized components list of the items forecast to be required to be perform a specified maintenance or repair task is established in the standard repair parts listlibrary database 126. This database may be organized by part numbers or nomenclature or both. In case of a database organized according to nomenclature only, various analysis techniques related to the context of the semantics used to describe the components may be applied to determined proper part applications for the various configurations. - The equipment
geography description database 122 stores data related to geographic zones or locations for all maintained areas of the end item of equipment. This may include detailed information about subareas, focused on defining where maintenance work has been located on the end item of equipment. For example, geography must be specified as “right-hand front fender—rear edge” or “left-hand forward wheel well—pump mount side.” Only those areas determined to be subject to frequent or expensive maintenance may be listed. Preferably, the geographic location descriptions are related to a user graphical interface allowing for rapid point-and-click data acquisition. That is, a user operating a pointer-type device in conjunction with a display device may find and identify a specific geographic location or zone quickly using a graphical user interface. In instances where industry regulatory entities have pre-established geographic areas or zones or sub-zones, such as the ATA zones specified by the Air Transport Association for commercial aircraft, utilization or cross references may made to those standards in thegeographic description database 122. An example of the ATA zones is provided herein as an appendix. - The component part/
serial number database 128 stores part numbers or component serial numbers or some other unique tracking number for components of the equipment. Theconfiguration database 130 stores information about the configuration or interrelationship of the components and parts of the equipment. These databases may be accessed for additional information about equipment needing repair or replacement. - While the several databases shown in
FIG. 1 and described herein are independent in this embodiment, other data storage embodiments may be used. The data associated with the respective databases may be combined or linked in one or more databases. Databases may be located together as shown or distributed about the network. Any suitable database management tool or applications may be used for managing and maintaining the databases. - The
scheduler 110 schedules maintenance for a plurality of maintenance time periods for equipment as part of the operation of the MRO system. As noted above, some MRO work occurs according to a schedule, such as routine preventative maintenance or overhaul work. Some MRO work may be planned but unscheduled, such as repairs. Thescheduler 110 tracks work that must be performed over time against a calendar and using information about availability of other resources. - The
scheduler 110 is illustrated inFIG. 1 as a computer in communication with thenetwork 102 with access to thestorage device 108 including its databases, theserver 106 anduser interface 104. In other embodiments, the functionality provided by thescheduler 110 may be performed by other components of thesystem 100. For example, a processor associated with theserver 106 may perform the functions provided by thescheduler 110. - The scheduler receives data inputs regarding equipment on which maintenance is to be performed, the maintenance to be performed on the equipment, and resources available to perform the maintenance, such as parts and personnel. The scheduler may also receive other information such as availability of the equipment and planned maintenance schedules for the equipment. Using this information and other required information, the
scheduler 110 develops a maintenance plan for maintenance in a selected time period for specified equipment. As will be described in greater detail herein, thescheduler 110 further receives information about unplanned work identified, for example, by a technician during inspection or performance of other work. Thescheduler 110 integrates performance of the unplanned maintenance work into the maintenance plan for the equipment. - It is to be noted that other embodiments of the
system 100 may be substituted. The functionality provided by the system may be alternately provided by computation and data storage devices having any configuration which is suitable to the needs and purposes described herein. The configuration shown inFIG. 1 is exemplary only and is intended to clarify the function of the various elements of the system described therein. -
FIG. 2 is a flow diagram illustrating one embodiment of a method for operating thesystem 100 ofFIG. 1 . The method illustrated inFIG. 2 permits identification, categorization and integration of unplanned MRO work in a schedule for completion of planned MRO work. The method begins atblock 200. - At
block 202, unplanned MRO work is discovered. This may occur at any point in the MRO work process. For example, the unplanned work may be discovered before the equipment is delivered for MRO processing. The MRO work may be discovered while planned MRO work is under way, for example, when the equipment has been opened up for access to a planned work area. - In accordance with one embodiment, for each item of unplanned work discovered, an MRO technician or mechanic utilizes a computer input device to define the location of the work on the equipment. Two techniques for location definition are envisioned, and others may be implemented as well. In one technique, the location of the unplanned work is specified using the most relevant planned work definition, as specified in the probable findings database 116 (
FIG. 1 ), as will be described in greater detail below. Alternatively, the unplanned work can be specified through an assigned MRO geography definition. This definition may be obtained, for example, from the geography definition database 122 (FIG. 1 ). In the example involving aircraft MRO work, this information may be specified in the format of standard codes and locations for aircraft specified by the Air Transport Association, shown in the appendix hereto. For example, those standard codes may be specified as a default definition database. If other definitions are specified, for example by a specific airline which operates an aircraft, the preferred definitions may be substitute for the standard, default codes and locations. - Preferably, the location definition operation described by
block 204 occurs when the technician clicks on an item on a menu. The menu may be presented to the technician by means of theuser interface 104 or a device such as the wirelessdata communication device 112 in communication with theuser interface 104. It is envisioned that the user interface will provide an easy to navigate menu system for data entry and access by a technician, mechanic or other operator. The menus are preferably dynamic pop up or pull down menus, with menu selections varying with the context of the menu. Only appropriate menu choices are provided to the user depending on his current context or location in the menu system or level of operation. - At
block 206, the operator specifies the geography/work pairing for the unplanned work items. Preferably, this is accomplished using a point and click menu system associated with a user interface. The menu system may be used to access or specify the particular geographical location of the equipment. The menu system may further be used to select or identify a particular item of unplanned MRO work to be completed at the specified geographical location. This task description selection is preferably based on a pull down menu of relevant information only, and a click-to-verify method for input. That is, once the geographical location has been identified by the operator, only the possible work tasks in that geographical location are made available by the menu system. If the operator specifies an area of the assembly where only hydraulic systems are located, only hydraulic work tasks will be displayed by the menu system. Other tasks, such as electrical tasks and airframes repair tasks, will be suppressed. - At
block 208, the operator identifies and verifies the work category for the items of unplanned work. Preferably, different tasks are specified in different categories of work. For example, in the airplane repair context, categorization may assign tasks to categories such as hydraulics, electrical, airframe repair, etc. Categorization can be important to allow allocation of proper and necessary resources for completion of the planned and unplanned work. Alternatively, the tasks could be categorized by geography, specifying physical regions of the equipment under repair for categories to which work tasks may be assigned. - At
block 210, a task description for the unplanned work tasks is identified and verified. Again, this is preferably accomplished using a pull down menu of relevant information, along with a click-to-verify method for input. Based on the information provided by the technician, the system responds with a pull down menu whose entries are limited to only relevant or proper entries. Irrelevant or improper entries are suppressed. - At
block 212, component data is acquired by the system. In one embodiment, this is done by reading a data code from the device. The data code may be machine readable, such as a bar code or magnetic stripe or may be a part number or serial number attached to the device. The data code is a unique identifier of the device. In another embodiment, this is done by posing tailored questions to the operator to obtain the required information. The questions may be posed using a video entry device associated with the user interface of the system or with the wearable communication device. Alternatively, an audio interface may be provided. The questions are tailored to the type of MRO task already identified by the technician. In one example, the following questions may be transmitted to the operator for data entry. - Does the item to be maintained have a digital media (bar code/magnetic stripe, etc.) attached? If yes, input the information by scanning it now.
- If no such media identifier exists, input the serial number printed or stamped on the item, or input “no” if none exists.
- Should the item be removed for further work, yes/no.
- Additional tailored questions may be asked as required.
- At this point, the answers to the tailored questions along with other data entered by the operator have provided the system with sufficient information to draw inferences as to the next steps required. Any appropriate or available application may be employed to perform necessary logical operations to process the input information. The system can accordingly initiate required transactions in support of those next steps.
- The information provided by the operator and obtained from the storage device of the system allows the system to fully identify and describe the unplanned work task. At
block 214, the system establishes an unplanned task data record, which may be located in a portion of memory for storing data related to the unplanned task. Atblock 216, the system determines a time span/cost estimate for the unplanned task. The time and cost estimates may be based on prior art data or experience performing similar unplanned work. Atblock 218, the system orders the necessary support for the task. Examples of required support include components for repair and replacement, information such as directions, and personnel. - At
block 220, the unplanned work is sequenced into the planned work sequence to produce a revised work plan. This forms the preparation of an integrated schedule including the original work tasks and the newly discovered tasks. After producing the revised work plan, the method illustrated inFIG. 2 terminates atblock 222. Additional or alternate actions may be taken in other embodiments. - It may happen that the system cannot develop the necessary described linkages. In that case, a transaction is produced by the system to a maintenance control area for further analysis or engineering assistance. In all cases, the unplanned work is fully identified, categorized and integrated to the total work plan prior to executing the repair task. This reduces or eliminates the uncertainty and variability formerly associated with unplanned MRO work.
-
FIG. 3 illustrates one embodiment of the planned work probable findings database. Thedatabase 116 is preferably contained on a storage medium such as a hard-disk drive, semiconductor memory or other electronic storage. The storage device or storage medium forms a computer readable equipment maintenance database storage medium. The database includes first data defining planned maintenance items for equipment and second data defining probable maintenance items for the equipment. The second data are associated with the first data by geographic data for the equipment. - In the embodiment illustrated in
FIG. 3 , the first data are organized as a series ofplanned MRO tasks task pointer 308 points to one of their designated tasks. Only three MRO tasks are shown in 302, 304, 306FIG. 3 but thedatabase 116 may contain any number of tasks. Associated with eachplanned MRO tasks plan MRO task 302 are a firstprobable MRO task 310, a secondprobable MRO task 312, and a thirdprobable MRO task 314. Any number of probable MRO tasks may be associated with each planned MRO task.FIG. 3 is exemplary only. - Linking the planned MRO tasks and the probable maintenance items is location data. The location data defines the physical or geographical location of the equipment where the components associated with the planned maintenance and probable maintenance may be found. The location for respective probable maintenance items associated with a common planned MRO task may vary. A
location pointer 316 points to the currently accessed location in the database. Thus, this database may be considered a two-sided database. - Two-way operation of the
database 116 may occur as follows. The database may be accessed using any suitable database management system or other user interface. Preferably, in the embodiment ofFIG. 1 , a pull down menu system is used to display data from thedatabase 116. By pointing and clicking with a pointer-type device, for example, thetask pointer 308 or thelocation pointer 316 may be moved to select different database entries. By specifying a planned MRO task as indicated by thetask pointer 308, all probable maintenance items associated with that planned MRO task can be located. Similarly, by specifying a geographic location using thelocation pointer 316 into thedatabase 116, all planned maintenance such asplanned MRO task 302 and probable or unplanned maintenance items such astasks - It should be noted that there may be several different location entries which may be associated with a single planned
MRO task MRO task 302 is described as “inspect air conditioning air ducts,” such ducts run the length of the plane, in a plurality of locations. Each separate location may have a separateprobable MRO task - The planned work
geography locator database 116 can be formed in any suitable method. In one embodiment, this database is formed by identifying a planned MRO task for particular equipment and identifying one or more geographical areas of the equipment associated with completion of the planned MRO task. Subsequently, unplanned MRO tasks are identified which are associated with the one or more geographical areas. For example, a planned MRO task may be identified as “inspect left wing hydraulic lines.” The geographical areas for the airplane associated with this MRO task may be identified as the left wing and individual components and spaces thereof. An example of unplanned MRO tasks associated with the one or more geographical areas is “left wing airframe damage” or “worn electrical cables in left wing.” - The method for forming the equipment maintenance database further includes storing in a database first data related to the planned MRO task. This data may define, for example, an element or component requiring maintenance and the particular maintenance to be performed. The method further includes storing second data in the database, the second data related to the unplanned MRO tasks which have been identified for the geographical areas associated with the planned MRO task. The method still further includes associating the first data and second data by geographic data related to one or more geographical areas of the equipment. In one example, the geographical data may be data related to the codes established by the Air Transport Association industry organization to define an standard reference characteristic the geographical locations of an airplane. Examples of these codes are included herewith as an Appendix.
-
FIG. 4 illustrates a tailored question and response session between the system ofFIG. 1 and an operator to gather data to permit integration of unplanned work tasks with a planned work schedule. Atblock 402, the operator is prompted to identify the item for maintenance. Atblock 404, the data entered by the operator is received. Atblock 406, the operator is asked if the specified item should be removed for further work. A response input is received atblock 408. If a yes response is received, block 410, the operator is asked if a special fixture is required atblock 412. A yes or no response is received atblock 414. - At
block 416, the operator is prompted to enter a required time for completion of the unplanned MRO task. A response is received atblock 418. In addition, in one embodiment, external data is also received related to timing and duration of maintenance work. In one example, some airlines specify a very short turnaround time, meaning the duration from arrival of an airplane at an airport gate until subsequent departure of the plane on a next flight from the gate. Some airlines specify a turnaround time of 20 minutes. Other airlines specify a turnaround time of, for example, one hour. This information may be used, in conjunction with the data entered atblock 418 to schedule the unplanned maintenance. Thus, if the data entered requires less than one hour for completion, and the turnaround time received atblock 420 is an hour or more, the system may conclude that this unplanned work item may be completed during a turnaround process, assuming personnel and the equipment required for the task are available. - At
block 422 the operator is prompted for a need for evaluation of the completed work. A response is received atblock 424. Atblock 426, the operator is asked if an engineer is required for completion of the task. A response is received atblock 428. Atblock 430, the operator is asked if quality assurance personnel are required for completion of the work item. A response is received atblock 432. Atblock 434, the operator is asked if a lead technician or mechanic is required for completion of the task. A response is received atblock 436. - Other questions may be asked of the operator based on the location and nature of the unplanned work to be performed and based on other information provided in the responses to the questions. The questions may be viewed as a tree, where the branch taken in the tree by the system is dependent upon the input received from the operator. Any number of questions may be generated depending upon the responses provided by the operator. Preferably, the number of questions is limited to the range of six to ten questions which are fairly general in nature for ready response by the operator.
- From the foregoing, it can be seen that the present invention provides method and apparatus for identification, categorization and integration of unplanned MRO work in an MRO work schedule. A technician identifies location of the unplanned work and answers tailored questions posed by the system to obtain additional information about the nature of the work. Using this information, the system identifies and describes the unplanned work tasks and modifies the schedule for planned maintenance work to include the identified unplanned work. In this manner, the required components, information, tooling and personnel to perform the tasks, both unplanned and planned tasks, may be scheduled for efficient utilization and completion of the work schedule.
- While a particular embodiment of the present invention has been shown and described, modifications may be made. It is therefore intended in the appended claims to cover such changes and modifications which follow in the true spirit and scope of the invention.
-
APPENDIX ATA CODES 05 MTC CHECKS 22 AUTO FLIGHT 10 Time Limit 10 Auto Pilot & Flight Director * 20 Scheduled Checks Pitch/Roll/Annunciation 21 Trans Check 20 Speed-Attitude Correction 23 #1 Layover YAW Damp 25 #2 & ER Layover Checks Speed/Mach or Pitch Trim 50 Unscheduled Checks Stability Augmentation Hard Landing 30 AutoThrottle Turbulent Air Thrust Management Lightning Strike 40 System Monitor Over-weight Landing MCDP Bird Strike DLC/Auto Ground Spoilers Pre-Ferry Inspection (L 1011 only) 21 AIR CONDITIONING 70 Aerodynamic Load Alleviating 10 Compression Active Control System 20 Distribution 23 COMMUNICATIONS Conditioned Air Ducts 10 VHF Lav/Galley Vent System 20 VHF and UHF Recirculation Fan System SELCAL Gasper 30 Passenger Address Equipment Cooling and Entertainment 30 Pressurization Audio and Video Control & Indication Tape Recorders Relief Valves 35 Sky Radio 40 Heating 40 Interphone Cargo Heat Cabin and Service Floor/Foot/Shoulder Heat 50 Audio Integrating Hot Air Manifold Heat Flight Interphone 50 Cooling Cockpit Microphones/Headsets Air Cycle Machine and Loudspeakers ACM Control & Ind.(ACM Only) 60 Static Discharge ACM Valves 70 Voice Recorder ACM Controller 80 ACARS 60 Temp. Control 90 Air to Ground Telephones Zone Temp. Controller (Airfone, Satcom) Zone Trim System 91 ARINC 629 Compartment & Zone Ind. 93 Overhead Panel ARINC 70 Humidity Regulation System (OPAS) 73 Ozone Control 94 Onboard Local Area Network (OLAN) 24 ELECTRICAL POWER 27 FLIGHT CONTROLS 09Electrical Load Management 02 Primary Flight Controls System (ELMS) 03 High Lift Control System 10 Generator Drive CSD and IDG 10 Ailerons 20 AC Generation Aileron Trim Generators Control Wheel Generator Control Panels Aileron Pos. Indication Indication (AC) 20 Rudder 30 DC Generation Rudder Trim Transformation Rectifiers Rudder Pedals Battery and Battery Charging Rudder Indication Indication (AC) 30 Elevator 35 Flight Control D/C Power Elevator Feel 40 External Power Control Column Bus Power Control Unit Elevator Indication 50 Electrical Distribution 40 Horizontal Stabilizer Ground Service Stabilizer Trim Utility Buses Stabilizer Pos. Indication Generator/Bus Tie Breakers 50 Flaps 25 EQUIPMENT & FURNISHINGS Asymmetry Control 10 Flight Compartment Load Relief 20 Passenger Compartment Flap Pos. Indication 25 Cabin Maintenance Visit 60 Spoilers/Speedbrakes 30 Buffet and Galley Spoiler Pos. Indication Service Areas 70 Gust Lock Ovens/Chillers/Dispensers 80 Leading Edge Lift Augmenting Carts Leading Edge Slats/Flaps or Slots Elevators or Lifts Auto Slat Extension System 40 Lavatories Asymmetry Control 50 Cargo and Accessory Slat or Flap Pos. Indication Compartments 28 FUEL Cargo Loading Systems 10 Storage 60 Emergency Equipment 20 Distribution 88 Cabin Cleaning Operation Plumbing 26 FIRE PROTECTION Pumps 10 Detection Valves Fire/Overheat or Smoke 30 Dump 20 Extinguishing 40 Indicating Fixed or Portable Extinguishers Quantity 30 Explosion Suppression Temperature Fuel System Protection Pressure 29 HYDRAULIC POWER 32 LANDING GEAR 10 Main 10 Main Gear and Doors 20 Auxiliary 20 Nose Gear and Doors Emergency or Standby 30 Extension and Retraction RAT Actuators and Control System 30 Indication Latches and Locks Quantity Truck Positioning (Tilt) Temperature 40 Wheels and Brakes Pressure Wheel Assemblies 30 ICE & RAIN PROTECTION Parking Brakes 10 Airfoil 42 Anti-skid System, Autobrakes 20 Air Intakes 43 Tire Foreign Object Damage Cowl Anti-icing (Puncture Damage) 30 Pitot and Static 50 Steering 40 Windshields and Windows 60 Position and Warning 50 Antennas and Radomes Landing Gear/Supplementary Gear 60 Propellers/Rotors and Gear Door Warning and 70 Water Lines Indication System Supply and Drain Proximity Switch Electronic Unit 80 Detection 70 Supplementary Gear Ice Detector and Annunciation Tail Skid 31 INSTRUMENTS 33 LIGHTS 09 System Card Files 10 Flight Compartment 10 Panels 20 Passenger Compartment 20 Independent Instruments Galley and Lavatories Clocks Sign Illumination 30 Recorders 30 Cargo and Service Compartments Flight Recorders/FDAU 40 Exterior Lighting 35 Aircraft Conditioning 50 Emergency Lighting Monitoring System (ACMS) Flashlights 40 Computers Engine Indicating Crew Alerting System (EICAS) Multi-Acquisition Processor (MAP) 41 Airplane Information Management System (AIMS) 50 Central Warning Aural Warning Takeoff/Landing Warning 34 NAVIGATION 38 WATER/WASTE 10 Flight Environment Data 10 Portable Pilot and Static Systems Storage Altitude/Altitude Alert Distribution A/S and Over-speed Warning Quantity Ind. V/S 30 Waste Disposal Air Data Computers Wash Basins Stall Warning Water Closets Air Temperature Flushing Systems 20 Attitude and Heading 40 Air Supply Electronic Flight Instrument Systems Tank Pressurization Attitude Indicator Systems 45 CENTRAL FAULT DISPLAY Magnetic Heading Systems SYSTEM Directional and Vertical Gyros Turn and Bank 49 AIRBORNE AUXILIARY POWER Standby Horizon 10 Power Plant Air Data Inertial Reference System Mounts (ADIRS) Fireseals 30 Landing and Taxi Aids Electrical Harness ILS and Marker Beacon Systems Intake Radio Altimeter System Drains Monitor/Comparators 20 Engine 40 Independent Position Determining Accessory Gearbox INS or IRU 30 Engine Fuel and Control Weather Radar Electronic Controller Ground Proximity Warning System 40 Ignition and Starting “Collision Avoidance (TCAS, Windshear)” Starter 50 Dependent Position Determining 50 Air ADF - ATC - VOR Accessory Cooling OMEGA - DME - GPS Pneumatic Supply 60 Flight Management 60 Engine Controls 35 OXYGEN Emergency Shutdown 10 Crew 70 Engine Indicating 20 Passenger Speed and Temperature 30 Portable 80 Exhaust 36 PNEUMATIC 90 Oil 10 Distribution Storage Control System Distribution Ducts Indication 20 Indication Temp and Pressure (duct) 52 DOORS 54 NACELLES/PYLONS 10 Passenger/Crew 10 Main Frame Steps Pylon/Strut Actuation Keels 20 Emergency Exits 30 Plates/Skins Emergency Actuation System Access Covers 30 Cargo 40 Attach Fittings Doors and Actuation System Thrust Reverser 40 Service Attach Fittings 50 Fixed Interior 50 Fillets/Fairings Flight Compartment Pylon to Wing/Eng Fairing Lavatory 55 STABILIZER 60 Entrance Stairs 10 Horizontal Actuation Plates/Skin Control and Indication 20 Elevator 70 Door Warning Plates/Skin Passenger/Service Accessory Balance Devices Compt. And Stairs Ind. Tabs Code Landing Gear Doors 30 Vertical Under Chp. 32 Plates/Skin 53 FUSELAGE 40 Rudder 10 Main Frame Plates/Skin Bulkheads and Keels Balance Devices 20 Auxiliary Structure Tabs Floors 50 Attach Fittings Fixed Partitions Horizontal and Vertical Stab/Elev 30 Plates and Skins and Rudder Component Doublers 56 WINDOWS 40 Attach Fittings 10 Flight Compartments Door/Gear/Wing and Engine 20 Cabin Pylon Attach Fittings 30 Door Seat Tracks 40 Inspection and Observation 50 Aerodynamic Fairings Fillets Radome/Tail Cone 57 WINGS 72 ENGINE 10 Main Frame 10 Reduction Gear and Shaft Primary Structure (Turbo-prop) 20 Auxiliary Structure 20 Air Inlet Section Leading/Trailing Edge Fan Case Wing Tips Guide Vanes (Fixed) Fairing/Fillets 30 Compressor Section 30 Plates/Skin Compressor - Front/Intermediate/Rear 40 Attach Fittings Diffuser Case Pylon/Control Surface and Landing 39 Compressor Stall Gear Attach Fittings 40 Combustion Section 50 Flight Surfaces Burner Cans Ailerons and Tabs Combustion Chamber and Ducts Spoilers Case Flaps 50 Turbine Section Leading Edge Lift Devices Turbine Nozzles/Rotors/Cases 71 POWERPLANT Exhaust Section 03 Foreign Object Damage (FOD) 60 Accessory Drive Section 10 Cowling Engine Mounted Gearbox Inlet 70 By Pass Section Accessory Fan Exist Case Core Air Bleed Manifolds 20 Mounts 73 ENGINE FUEL & CONTROL Engine to Pylon 10 Distribution 30 Fire Seals Pumps Power Plant Mounted Filters 40 Attach Fittings Nozzles Power Plant Accessory Attach Valves 50 Electrical Harness Tubes Wiring Disconnected and Removed 20 Controlling with Engine Fuel Control 60 Variable Air Intakes Electronic Engine Control (FADEC) 70 Engine Drains Thrust Lever Resolvers 98 Max Power Takeoff EEC Alternator MAX Power T/O (L1011-1 and Propulsion Discrete Interface Unit MD 88/90) 30 Indication NORM Power T/O (B 767 Domestic Fuel Flow W/PW 4060) Fuel Temp ARTS Fired (MD88) Engine Pump Fuel Press Filter Bypass 74 IGNITION 77 ENGINE INDICATING 10 Elect Power Supply Exciter 10 Power 20 Distribution EPR Ignition Lead Tachometer (N1/N2/N3) Igniter Plug Engine Synch 30 Switching 20 Temperature Ignition Control Circuit EGT/TGT 75 AIR 30 Analyzers 10 Engine Anti-icing Airborne Vibration Monitor Cowl Anti-icing Code Under Electronic Engine Control Monitor Chp. 30 78 EXHAUST 20 Accessory Cooling 10 Collector/Nozzle Ducts and Tubing 20 Noise Suppressor Generator Cooling (exhaust gas noise only) Bearing Cooling 30 Thrust Reverser Ignition Cooling Fan/Turbine Reverser Active Clearance Control Control System (Case cooling) Indication System Turbine Cooling 79 OIL 30 Compressor Control 10 Storage Variable Stator Vanes Engine Tank Bleed Valves 20 Distribution Actuator (VSV) Engine Lubricating System 40 Indication 30 Indication Engine Air Control System Quantity Indication Temperature 76 ENGINE CONTROLS Pressure (Use 2230 for Autothrottles) Filter Bypass 10 Power Controls 80 STARTING Levels 10 Cranking Cables Starter System Bell Cranks 99 MISCELLANEOUS Tension Regulators Board Forms 20 Emergency Shutdown “Engine”“T”“Handle” Shutdown Circuits
Claims (12)
1. An automated interactive method for providing relevant maintenance information to a technician assigned to maintain equipment, the method comprising:
entering, through a user interface, unplanned maintenance work discovered while planned maintenance work is under way;
defining, in a database contained on a storage medium, a geographic location of the unplanned maintenance work;
selecting, with a server comprising a processor and in communication with the user interface and the database, a task paired with the geographic location of the unplanned maintenance work;
entering, through the user interface, maintenance data for integrating the unplanned maintenance work with the planned maintenance work by answering an initial tailored question corresponding to performance of the selected task, and presenting an additional tailored question chosen based on a response entered by the technician to the initial tailored question; and
establishing, with a scheduler comprising a computer and in communication with the server, a resultant unplanned maintenance work data record.
2. The method of claim 1 , further comprising:
prompting to enter a required time for completion of the discovered unplanned maintenance work.
3. The method of claim 1 , further comprising:
prompting to enter a need for evaluation of the unplanned maintenance work upon completion.
4. The method of claim 1 , further comprising:
prompting to enter a need for additional technicians or a need for a special technician comprising quality assurance personnel, a lead technician, or a lead mechanic for completion of the unplanned maintenance work.
5. The method of claim 1 , further comprising:
presenting the tailored question to be viewed as a tree structure where a branch taken in the tree structure is dependent upon the response entered from the technician.
6. The method of claim 1 , wherein the step of defining in the database further comprises defining in the database the geographic location of the unplanned maintenance work by:
establishing in the database, through a task pointer, a first path to the unplanned maintenance work on the equipment;
establishing in the database, through a location pointer, a second path through the selected geographical location to both the planned maintenance work and the unplanned maintenance work.
7. The method of claim 1 , further comprising:
once the geographic location is defined, suppressing a display of another task paired with a different geographic location.
8. The method of claim 1 , further comprising:
selecting with the server a work category of the selected task that shares resource allocated for the planned maintenance work;
selecting with the server a type of the selected task associated with the selected work category;
9. The method of claim 8 , further comprising:
identifying with the server a task description corresponding to the selected type.
10. The method of claim 9 , wherein the step of entering the maintenance data further comprises entering through the user interface component data by answering an initial tailored question corresponding to the selected type.
11. The method of claim 9 , wherein the step of establishing the resultant unplanned maintenance work data record further comprises establishing the resultant unplanned maintenance work data record comprising the selected geographical location, the selected work category, the selected task type, the task description, and the component data.
12. The method of claim 9 , further comprising:
determining that a resultant unplanned maintenance task data record cannot be developed based on linkages among the geographical location, the selected task, the selected work category, the selected task type, the task description, and the component data; and
generating and sending a transaction to a maintenance control area for further analysis or engineering assistance of the unplanned maintenance work.
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Also Published As
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US20090006169A1 (en) | 2009-01-01 |
US8788312B2 (en) | 2014-07-22 |
EP1425692A2 (en) | 2004-06-09 |
WO2003021503A8 (en) | 2003-08-14 |
US7440906B1 (en) | 2008-10-21 |
CA2459566A1 (en) | 2003-03-13 |
WO2003021503A2 (en) | 2003-03-13 |
EP2273437A1 (en) | 2011-01-12 |
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