performed at this level includes line operations, such as  servicing,  preflight  inspections,  and  minor adjustments   in   preparation   for   flight;   periodic inspections   of   aircraft   and   equipment   and   the associated tests, repairs, and adjustments that do not require  shop  facilities;  and  component  removal  and installation. This work is done in facilities assigned to the operating units. These facilities may be used exclusively by a single large squadron or they may be shared by one or more smaller units. In an operating activity, permanently assigned personnel  perform  O-level  maintenance.  O-level maintenance at a naval air station (on aircraft assigned to  the  station)  is  a  function  of  the  operations maintenance  division  (OMD).  When  directed  by higher authority, the OMD also provides O-level maintenance and other assistance to transient aircraft. Intermediate-level   maintenance   is work performed in centrally located facilities for the support of  operating  activities  within  a  designated geographical  area.  I-level  maintenance  work  is performed at a particular base or station, or aboard aircraft carriers (CVs/CVNs), and amphibious assault ships (LHDs/LHAs/LPDs). This level of maintenance consists  of  calibration,  off-equipment  repair,  or replacement of damaged or unserviceable components or assemblies. It also consists of the manufacture of nonavailable parts, periodic inspections, and technical assistance on aircraft components and equipment from supported units. NOTE:  The  aircraft  I-level  maintenance department  is  commonly  referred  to  as  the SUPPORTING  activity,  and  the  O-level  maintenance activity (squadron) is referred to as the SUPPORTED activity. I-level maintenance activities are manned by a small number of permanently assigned personnel and sea  operational  detachment  (SEAOPDET)  personnel, a sea duty component assigned to the shore AIMD, used to augment the aircraft carrier AIMD in support of carrier air wing embarkations. Personnel assigned TAD to intermediate maintenance activities (IMAs) from non-CV deploying squadrons or shore IMA SEAOPDETs should be assigned for the complete deployment  cycle.  Shore-based  Navy  squadrons  who have I-level billets authorized should assign personnel to the supporting IMA for a minimum of 12 months. Depot maintenance is work that must be done in industrial-type facilities. Navy depot maintenance activities are manned primarily by civilians, and are known as naval aviation depots (NAVAVNDEPOTs or NADEPs). The Commander, Naval Air Systems Command (COMNAVAIRSYSCOM or NAVAIR) manages  NADEPs.  This  level  of  maintenance (standard depot-level maintenance or SDLM) includes overhaul and major repair or modification of aircraft, components,  and  equipment.  It  also  includes  the manufacture of specified aeronautical parts to be stocked   as   spares,   the   manufacture   of   kits   for authorized aircraft and the modification of equipment. Installation of these spare parts and incorporation of modification kits may be done at this level or at a lower level  of  maintenance.  Depot-maintenance  activities also perform special rework. Some military personnel are usually assigned to the NADEPs for training or to help in performing the I- and O-level maintenance connected to the depot facility. You can see by the above descriptions that the three levels of aircraft maintenance provide an orderly separation of the various maintenance tasks. These three  separate  levels  of  maintenance  are  needed because of task and equipment complexity, space requirements, the skill level of the assigned personnel, and the scope of support responsibility. Q10. Q11. Q12. Q13. Q14. Aircraft maintenance functions are divided into how many distinct levels? What  are  the  distinct  levels  of  aircraft maintenance? Describe organizational-level maintenance. What   level   of   maintenance   includes   the manufacture of non-available parts? Depot-level maintenance is performed in what type  of  facility? Responsibilities The Chief of Naval Operations (CNO) sponsors and directs the NAMP. Program administration is through the operational chain of command. The Naval Supply  Systems  Command  (NAVSUP)  provides material in support of the operation and maintenance of  aeronautical  equipment.  NAVAIR  is  responsible for research, design, development, testing, acquisition, and logistic support of all naval aviation procurement relating  to  aircraft  missile  targets  and  associated material  and  equipment.  Some  activities  may  be assigned  the  intermediate  maintenance  responsibility for an entire logistic area if requested by the cognizant controlling custodian. Specific activities designated to perform  intermediate  maintenance  are  authorized  to 1-3