sequence for accomplishment. MRCs identify the recommended rating/military occupational specialty (MOS), performance interval, and the work area/zone involved. A listing is provided that identifies support equipment, consumables, replacement parts, and assistance requirements for task performance. Illustrations, clearances, tolerances, charts, part numbers, and other pertinent information are included where necessary. MRCs do NOT include instructions for repair, adjustment/calibration, or means of correcting defective conditions. Variations in the arrangement and format of MRCs exist because of periodic changes in the governing preparation specification. Consult the Naval Aeronautical Publications Index (NAPI) for specific aircraft/ equipment details. Locally established periodic maintenance requirements or requirements established by higher authority, not covered by the published MRCs, may be added by taking the following steps:
1. New requirements maybe added to existing cards and may necessitate an adjustment of the sequence control chart/card.
2. The requirements may be presented on blank cards (NAVAIR 4790/3) and inserted among the existing cards in the most logical sequence for accomplishment. The local card will be numbered with the preceding card number and an alphabetic suffix (a, b, c, etc.). Enter the appropriate interval; for example, daily or 128-day in the block labeled Local. Local cards that do not relate to the existing cards may be added following the last card of the published deck. The higher authority reference or material condition generating the local card should be identified. A copy of all local cards is submitted to the applicable functional wing/MAW/MAG for review and/or comment and forwarded via the aircraft controlling custodian (ACC) to the cognizant field activity (CFA). If the requirement is valid and has fleetwide application, the CFA will incorporate the requirement into the applicable MRC deck. If the requirement is invalid or does not have fleetwide application, the CFA notifies the functional wing/MAW/MAG/ACC.
Sequence Control Cards/Charts (SCCs) are graphic, sequential work displays, which are used as an aid in planning and accomplishing the scheduled and unscheduled maintenance tasks during inspections. These SCCs indicate which MRCs are to be complied with, numbers and specialties of personnel required, times during which the separate jobs are scheduled for completion, POWER/AIR OFF or ON condition required during the work, and the area where the work is to be performed.
Turnaround Checklists are lists that have been prepared to support inspections of exterior and interior aircraft surfaces in an abbreviated walkaround order. The requirements cover these items necessary to determine obvious defects that may have occurred during each flight.
Support equipment manuals define the correct procedures for the functional operation, maintenance, and servicing of SE. When required, these manuals also include calibration of SE that supports maintenance, verification, and testing of installed systems, components, and related equipment.
The steady increase in complexity of sophisticated, higher performance systems resulted in the development of advanced automated test systems to reduce fault isolation and repair time. This requirement has resulted in the development of support equipment and built-in test capabilities, which use preprogrammed test tapes. Supporting English language checklists and diagnostic data are provided in the form of operator checklists and tape manuals.
The IPB provides system, subsystem, and individual parts identification, applicability, and source, maintenance, and recoverability (SM&R) codes. Coverage is normally contained in separate manuals or in a special section of the maintenance manual. Identification is enhanced by exploded views and assembly breakdown of systems and equipment designated as replaceable or repairable. IPBs are issued for all aircraft, contractor- and government-furnished equipment components and equipment, related hardware, and SE for which bit and piece support is to be provided. Separate IPBs are NOT provided for those items of contractor-furnished equipment (CFE) for which complete breakdown is contained in the airframe IPB. IPBs do NOT identify national stock numbers (NSNs). Therefore, part number data must be cross-referenced to Naval SupplyContinue Reading