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