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AERONAUTICAL EQUIPMENT SERVICE RECORD
Equipment Operating Record

Aviation Maintenance Administration Basic - Aviation theories and other practices
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in the figure, by the activity that initiates the record. Subsequent entries are made by activities that maintain custody of the equipment. The operating interval is the authorized time between overhauls for the particular equipment. The data required for the replacement interval is obtained by review of the Replacement Interval Data block on each Assembly Service Record (ASR), Module Service Record (MSR), and Scheduled Removal Component (SRC) card. The lowest time recorded is written as the replacement interval on the AESR. The replacement due is computed by adding the lowest interval time to the engine time. Entries are made in pencil to allow for component changes at repair or rework activities. The block titled “Current Engine or Propeller Position No.” is used to indicate the engine or propeller position number (1, 2, 3, or 4) as installed on the aircraft. This position indicator aids in the placement of associated accessory and other supplemental records in the correct equipment record. Equipment Operating Record (OPNAV 4790/31A) The Equipment Operating Record (fig. 8-2) is intended for use with all aeronautical equipment that requires the monthly compilation of significant operating data and is unique to the AESR. Reporting custodians ensure that operating or monitoring system data is entered on this form at a monthly interval and upon transfer of the equipment. The Equipment Operating Record provides columns for the logging of operating hours or monitoring system data, as applicable. Operating hours are obtained from record type (RECTYP) 7B of the Naval Aircraft Flight Record. Uncaptioned columns are provided for monitoring system data and are labeled as required; for example, starts, rounds fired, low cycle fatigue (LCF), and meter reading. If equipment is monitored by time since new (TSN) or time since overhaul (TSO), the first column under monitoring system data is labeled TSN or TSO, as appropriate. The cumulative column under operating hours will then show TSN or TSO hours. The Remarks column is for the logging of additional information, as appropriate. Q5. What type of data is recorded on the Equipment Operating Record? Q6.   Entries should be made on the Equipment Operat- ing Record at least monthly. On what other occasion should an entry be made on this record? Inspection Record (OPNAV 4790/22A) The Inspection Record, shown in figure 8-3, is one of the forms that is common to both the aircraft logbook and AESR. The maintenance of the form is the same for the aircraft logbook and AESR. The heading blocks on each form are filled in to identify the type of inspection and the equipment name, model, and serial number. A major engine inspection, phase inspection, special inspection, and conditional inspection (except fluid sampling, engine wash, or servicing) all require an AESR entry by the activity that performs the inspection. Phase and major engine inspections are logged on the same Inspection Record page. Special and conditional inspections are logged on separate Inspection Record pages as follows: Equipment that has an AESR and requires a nondestructive inspection (NDI) or disassembly and reassembly is logged on an Inspection Record page titled “SPECIAL.” A conditional inspection is an unscheduled inspection required as a result of an overlimit condition or as a result of a circumstance or event that creates an administrative requirement for an inspection, such as a hot start or overtemp. A conditional inspection is logged on an Inspection Record page titled “CONDITIONAL.” Acceptance and transfer inspections on uninstalled equipment are NOT logged on Inspection Records. During first-degree repair, the intermediate maintenance activity (IMA) screens the Inspection Record and, during rework, the depot-level maintenance activity screens the Inspection Record. The old Inspection Record pages for scheduled maintenance are removed, and a new record that contains the data necessary for determining when the next scheduled inspection is due is initiated. Conditional Inspection pages are screened for items of historical or maintenance value and transcribed to a new page. A minimum of 2 years of data is maintained at all times on the Conditional Inspection page. 8-3







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