Pre-Conditioned Air Hose Coupling TJ793L AdvantagesWhat is an air conditioner?PCA (Preconditioned Air) systems are used to introduce fresh conditioned air into the aircraft cabin when the aircraft is parked at the gate or at a maintenance location. The air is filtered, heated or cooled, and moisture

The installation of the air supply and exhaust system and the air conditioning system shall be carried out under the conditions that the construction of the building maintenance structure is completed.

The RAT is the auxiliary pressure source for the blue hydraulic system and emergency electric constant speed motor/generator (CSM/G). RATs are deployed automatically or manually based on failure conditions. It pressurizes the blue hydraulic system to 2500 psi. According to specific maintenance procedures, it can only be retracted on the ground.