Maintenance Action Form, OPNAV 4790/60, that documents maintenance data, the Single-Item Requisition System Document, DD Form 1348, that documents supply data, and the Naval Aircraft Flight Record, NAVFLIR, OPNAV 3710/4, that documents flight data. The data on these forms are source data for the Maintenance Data System (MDS). Source documents furnish the input information for the MDS and must be completely accurate. Data collection and reporting systems ensure that the basic data that is generated by maintenance technicians and material control personnel is documented. Management uses this data to make decisions about the day-to-day maintenance effort as well as decisions about manpower and material needs. As an AZ, you should understand the types of information that are recorded on source documents since you will initiate or assist in their initiation. The information recorded on source documents is the source for entries recorded in aircraft logbooks, aeronautical equipment service records (AESRs), and other maintenance records. MAINTENANCE ACTION FORM (MAF) The Maintenance Action Form (MAF), OMA MAF, (fig. 4-4) documents an on-equipment maintenance action (a maintenance action that is performed on a complete end item) or a removal and subsequent processing of a repairable component (off-equipment maintenance) by an intermediate maintenance activity (IMA). MAFs document maintenance actions such as the following: Repair work on equipment that does not involve removal of defective or suspected defective repairable components That portion of a special, conditional, corrosion, phase acceptance, or transfer inspection that involves the search for (not repair) defects (commonly referred to as the look phase of an inspection) Fix phase maintenance action that involves the correction (repair) of a discrepancy that is discovered during the look phase of a scheduled inspection MAFs often document a maintenance action taken such as the following: Removal of a component for check, test, or service Removal and replacement of an item for cannibalization Removal and replacement of repairable components within end items Removal or installation of a component for mission configuration change as designated by the aircraft controlling custodian (ACC); for example, the removal or installation of buddy stores in compliance with an ACC directive MAFs also document man-hours such as in the following maintenance actions: Man-hours that are spent in troubleshooting Man-hours that are accumulated during a work stoppage for lack of a part or to complete other maintenance Accumulated man-hours on a job that is closed out due to an aircraft accident Accumulated man-hours during or at the end of a reporting period for a job, required by the ACC, that was not completed Maintenance action and man-hours by an assisting work center in support of a primary work center Maintenance action and man-hours in support of a repairable item that is processed through an IMA Finally, MAFs document for-the-record action such as in the following maintenance actions: Incorporation of a technical directive change and associated maintenance action Collection of subsystem capability and impact reporting (SCIR) data Record of the ordering and the issuing of a repairable component, subassembly, or part Preservation and depreservation maintenance actions Terms and Codes Except for the Narrative Description of Discrepancy and Corrective Action portion of the MAF, maintenance data is recorded on the MAF in coded form. Below is a list of terms and codes that are used when maintenance actions are documented. For a detailed description of terms and codes that are used to 4-11