AM.II.I.K21

From the FAA library

• Aviation Maintenance Technician Handbook - Airframep. 16-56
  Chapter 16: Cabin Environmental Control Systems › Vapor Cycle Air Conditioning › System Servicing

  Water is removed from the system by evacuation. Anytime the system refrigerant charge falls below atmospheric pressure, the refrigerant is lost, or the system is opened, it must be evacuated before recharging. Evacuating a vapor cycle air conditioning system ... also known as pumping down the system. A vacuum pump is connected and pressure inside the system is reduced to vaporize any water that may exist. Continued operation of the vacuum pump draws the water vapor from the system…

• Instrument Flying Handbookp. 9-35
  Chapter 9: Navigation Systems › Instrument Approach Systems › Instrument Landing Systems (ILS)

  Instrument Approach Systems Most navigation systems approved for en route and terminal operations under IFR, such as VOR, NDB, and GPS, may also be approved to conduct IAPs. The most common systems in use in the United States ... simplified directional facility (SDF), localizer-type directional aid (LDA), and microwave landing system (MLS). These systems operate independently of other navigation systems. There are new systems being developed, such as WAAS and LAAS. Other systems have been developed for special…

• Aviation Maintenance Technician Handbook - Powerplantp. 3-3
  Chapter 3: Induction & Exhaust Systems › Basic Carburetor Induction System › Induction System Icing

  Induction System Icing A short discussion concerning the formation and location of induction system ice is helpful, even though a technician is not normally concerned with operations that occur when the aircraft is in flight. [Figure 3-7] Technicians should ... know something about induction system icing because of its effect on engine performance and troubleshooting. Even when an inspection shows that everything is in proper working order and the engine performs perfectly on the ground, induction system ice can cause…