APPENDIX  I ABBREVIATIONS,  ACCRONYMS,  AND GLOSSARY OF TERMS ACC—Aircraft   Controlling   Custodian—A   term applied   to   air   commands   and   COMNAV- AIRSYSCOM   for   exercising   administrative control of assignment, employment, and logistic support of certain aircraft and aircraft engines as specified by the CNO. The following ACCs have been designated by CNO: COMNAVAIRLANT, COMNAVAIRPAC,   CNATRA,   COMNAV- AIRESFOR,  and  COMNAVAIRSYSCOM. ACCEPTANCE—Assumption of responsibility for, or legal title to, an aircraft from another party. Receipt of new aircraft from a manufacturer (or of any aircraft from a non-Navy custodian) by a representative  authorized  to  do  so  by  the  Navy. Provisional acceptance is the acceptance of an aircraft for which certain obligations with respect to the aircraft have not yet been fulfilled by the contractor. ACCEPTANCE  INSPECTION—An    inspection performed  at  the  time  a  reporting  custodian  accepts a newly assigned aircraft, from any source, and on return of an aircraft from SDLM or other major D-level rework. It includes an inventory of all equipment listed in the AIR, verification of CADs and AEPSs, a configuration verification, hydraulic fluid sampling, a daily inspection, and a complete FCF.   For   acceptance   inspection   purposes, verification of CADs, AEPSs, and configuration is accomplished  by  visual  external  inspection  and record examination only. Disassembly beyond the daily  inspection  requirements  of  applicable  PMS publications is not required. The accuracy of flight hours on the Monthly Flight Summary (OPNAV 4790/2 IA) is verified by checking the PERIOD and SINCE NEW blocks and operating hours on the Equipment Operating Record (OPNAV 4790/3 IA) in the ACCUM block. Activities may elect to increase the depth of the inspection if equipment condition, visual external inspection, or record examination indicates such action is warranted. ACCEPTANCE INSPECTION (SE)—An inspection  performed  at  the  time  a  reporting custodian accepts a newly assigned item of SE. It includes   an   inventory   of   all   records   and components  that  make  up  the  item  of  SE,  a configuration   verification,   a   preoperational inspection  as  required  by  the  applicable  MRCs, hydraulic fluid sampling, and a functional test. The activity receiving the item of SE may elect to increase the depth of inspection if the SE condition indicates such action is warranted. ACCUM—Accumulated. ACCUMULATED  WORK  HOURS—Hours that are expended against a job by individuals within the same work center. ACOMTRAK—Aircraft     Composition     Tracking (System)-An  automated  system  for  tracking  the composition,  location,  and  operating  time/cycle counts of the life limited components of aircraft. ACOMTRAK is used to develop schedules for inspections,  replacement  procurements,  and  forced removal  actions  for  these  components  based  on usage requirements and fixed or variable hour or cycle  counts  or  limits.  It  provides  important support to the RCM Program. ACTION  DATE—The   Julian   date   on   which   a maintenance form is completed by a work center. ACT ORG—Action  Organization-The  activity  that actually performs the maintenance action. It is identified  by  a  three-character,  alphanumeric  code. ACTION  TAKEN  CODE—A one-character alphabetic  or  numeric  code  that  describes  what action   has   been   accomplished   on   the   item identified by a WUC. ACTIVE  AIRCRAFT—Aircraft currently  engaged  in supporting  flying  missions  either  through  direct assignment  to  aircraft  units  or  reassignment through  any  of  the  logistic  processes  of  supply, maintenance, or modification. AD—Aviation Machinist’s Mate. ADB—Aircraft Discrepancy Book. AI-1