APL—Allowance Parts List—A listing of repair parts prepared for individual equipment and compo- nents. APML—Assistant Program Manager for Logistics. APPROPRIATION—An authorization, established by an Act of the Congress of the United States, to spend funds of the U. S. Treasury or incur indebtedness for specified purposes. The O&MN, is established for each fiscal year concerned to fund the operation and maintenance requirements of the operating forces. The appropriation is only available for citation on requisitions for the fiscal year established and for the recording of related expenditures for the following two years. APU—Auxiliary Power Unit. ARMAMENT SE—Any equipment used in the loading of an explosive system or launch device on an aircraft. AS—Aviation Support Equipment Technician. ASPA—Aircraft Service Period Adjustment (Program)—A subset of RCM, provides for inspections that determine if a 12-month (or equivalent flight hour) adjustment can be added to the current PED of an individual airframe. Some series of aircraft are exempted from the ASPA Program for specific cause. For these aircraft, the existing provisions for extensions apply. ASR—Assembly Service Record. ASSIGNMENT —Statement of positive intention that specifically designated aircraft are or will be in the custody of specifically designated organizational units. AT—Aviation Electronics Technician or Action Taken (Code). ATCM—Aeronautical Time Code Management. ATO—Aircraft Transfer Order-A letter or message type directive used to effect all transfers of air- craft. AUDIT—As applied to QA, a periodic evaluation of detailed plans, policies, procedures, products, directives, and records. AUGMENTED SUPPORT—An interim arrange- ment during initial development or production for the support of the equipment by the contractor on an as required basis, pending assumption of support responsibility by the government. AUTOMATIC DISTRIBUTION—The action that provides initial distribution of publications to newly activated aircraft squadrons or ships and that provides definite follow-on distribution of supplementary publications (for example, changes, revisions, or supplements) to the recipients of the publications on initial distribution or to authorized requesters. AVAILABILITY (AIRCRAFT)—Applies to aircraft in an operating or nonoperating status that may be available for flight, upkeep, or rework, as specified. When the term is used and not qualified, it refers to commission availability. AVCAL—Aviation Consolidated Allowance List—A consolidated list of aeronautical material, tailored to each individual ship and MAG, to support assigned or embarked aircraft flight operations. It is normally prepared by NAVICP Philadelphia, PA under direction of the air TYCOM. AVIATION ACTIVITY—A formally structured staff, command, squadron, unit, or detachment headed by a Commander, CO, or OINC responsible for management, maintenance, material, and logistic support of naval aeronautical equipment. AVIONICS SE—Avionics SE (common and peculiary) includes all equipment of an electronic nature used for, but not limited to, the test, troubleshooting, alignment, or calibration of aircraft systems and components. Examples of such equipment are general purpose electronic test equipment, automatic test equipment, vacuum pressure testers, temperature, and fuel quantity indicator test sets. AWM—Awaiting Maintenance. AWM REASON CODE—Awaiting Maintenance Reason Code—A one-character numeric code that describes the reason for an AWM condition. AWM TIME—Awaiting Maintenance Time—Time when an aircraft is NMCM or PMCM and no maintenance is being performed on the systems causing the NMCM or PMCM status. Other maintenance upkeep not causing an NMCM or PMCM condition may be performed on the aircraft. AWP—Awaiting Parts—The condition that exists when materials required to complete a maintenance action are not available on station/ship. AWP is that time when no work can be performed on the item being repaired due to a lack of ordered parts. AI-3