production  divisions.  A  division  with  delegated functions  exercises  direct  control  of  the  production effort of its work centers. Although production control delegates control of some of its functions, it alone is responsible for the overall production effort of the department. Material Control.—Material  control  coordinates and controls the supply functions of the maintenance department. This work center acts as liaison between the  department  and  the  local  supply  activity,  and  it processes all supply and material transactions for the other divisions of the department. The material control division  of  an  IMA  has  an  aeronautical  material screening  unit  (AMSU).  AMSU  coordinates  the screening of received materials and parts to determine status and repair responsibility and capability. Production Divisions Production   divisions   provide   intermediate maintenance  on  aircraft  components  and  equipment  for supported  activities.  The  standard  organization  of  an IMA  has  six  production  divisions.  IMA  production divisions  are  generally  manned  by  maintenance technicians of the same rating in contrast to an OMA where technicians of different ratings are grouped together  into  fewer  divisions.  A  particular  rating performs the same type of work regardless of the maintenance level at which a technician works. For example, ADs work on engines and related equipment, AEs on instruments and related equipment, and ATs work on avionics equipment. The difference between the work of IMA production divisions and me work of OMA production divisions lies in the greater depth of maintenance that an IMA performs. POWER PLANTS.—Aviation  Machinist  Mates (ADs) who maintain engines, modules, power plant components, and associated equipment man the power plants division. AIRFRAMES.—Aviation  Structural  Mechanics (AMs) are assigned to work centers in the airframes division. This division is responsible for its specified depth  of  maintenance  for  airframe  and  structural components, and movable structures and surfaces including their hydraulic and pneumatic control and actuating systems and mechanisms. The airframes division  also  maintains  air  conditioning,  pressuriza- tion,  visual  improvement,  oxygen,  and  other  utility systems, as well as seat and canopy ejection systems and  components. AVIONICS.—The avionics division is manned with technicians to provide maintenance of avionics equipment   for   supported   activities.   Aviation Electrician’s  Mates  (AEs)  maintain  aircraft  electrical systems  and  instrument  systems.  Aviation  Electronic Technicians (ATs) use conventional and automatic test equipment  to  maintain  aviation  electronic  components, including  repair  of  weapons  replaceable  assemblies (WRAs) and shop replaceable assembles (SRAs). ATs also perform microminiature (2M) component repair. In addition, ATs perform test equipment qualification and  associated  test  bench  preventive  and  corrective maintenance. ARMAMENT  EQUIPMENT.—Aviation Ord- nancemen  (AOs)  are  assigned  to  the  armament division.  They  maintain  aircraft  armament  and  aviation ordnance equipment. AVIATION LIFE SUPPORT SYSTEMS.— Aircrew Survival Equipment (PRs) are assigned to the aviation  life  support  systems  (ALSS)  division.  This division maintains parachutes, life rafts, life vests, pressure suits, oxygen masks, emergency equipment kits, flight clothing, oxygen regulators, automatic parachute actuators, aviator’s protective helmets, and so forth. SUPPORT EQUIPMENT (SE)—The  Aviation Support Equipment Technician (AS) maintains SE. SE includes, but is not limited to, such items such as test stands, work stands, mobile electric power plants (MEPPs), and hydraulic and pneumatic servicing equipment. Q9. Q10. Q11. Who is responsible to the commanding officer for the accomplishment of the maintenance depart- ment’s  mission? Providing clerical and administrative services to the department is a function of what work center? The prevention of the occurrence of defects is a concept  of  what  work  center? Q12. What  officer  is  responsible  for  the  overall productive effort and material support of the maintenance   department? Q13.  What work center in an OMA is the nerve center of the entire maintenance department? Q14.  What work center is responsible for ensuring that parts,  tools,  and  materials  are  available  to production divisions in a timely manner? 1-12