ATA 70 - POWERPLANT

The CFM56-5B engine is a single-rotor, fixed stator, low-bypass-ratio turbo-fan power plant. True. False.

The power plant installation includes the engine, the engine inlet, the exhaust, and the fan cowls only. True. False.

The reverse thrust is controlled manually by the flight crew without any involvement of the ECU. True. False.

The thrust reverser uses 4 hydraulically operated pivoting blocker doors to redirect the engine fan airflow. True. False.

The FADEC alternator is located on the LH side of the gearbox. True. False.

The air starter is located on the LH side of the gearbox rear face. True. False.

The primary components of the fuel system are installed on the RH side of the fan compartment. True. False.

What is the primary function of the programming plug on the Electronic Control Unit (ECU) of the CFM56-5B engine?. To change the engine type. To adjust the fuel consumption. To change the available thrust. To monitor the engine temperature.

How is the engine attached to the pylon?. By the exhaust system. By forward and aft mounts. By the fan cowls. By the reverser assemblies.

Who manually selects the reverse thrust?. The ECU. The Engine Interface Unit (EIU). The flight crew. The Hydraulic Control Unit (HCU).

What is the primary role of the Hydraulic Control Unit (HCU) in the thrust reverser system?. To control the ECU. To supply hydraulic power to operate the thrust reverser. To control the throttle control levers. To monitor the engine's thrust.

Where is the ECU located?. On the LH side of the fan case. On the gearbox. On the RH side of the fan case. Inside the engine core.

Where is the air starter located?. On the LH side of the gearbox rear face. On the RH side of the engine core. On the RH side of the gearbox rear face. Inside the engine core.

Which component of the fuel system is operated by the gearbox?. The Hydro-Mechanical Unit (HMU). The filter. The fuel pump. The fuel nozzle.

Where is the oil tank located?. On the RH side of the fan case. On the LH side of the fan case. Inside the engine core. On the gearbox.

Where is the hydraulic shut-off valve located?. On the rear part of the pylon. On the forward part of the pylon. On the forward part of the RH 'C' duct. Inside the engine core.

What is the primary function of the drain system?. To supply fuel to the engine. To cool the engine. To collect and drain waste fluids and vapors from engine systems and accessories. To provide air to the engine.

What happens to the LP and HP fuel shut-off valves during a normal shutdown?. They are opened. They remain in a neutral state. They are closed. They are partially opened.

What drives the LP SOV to the closed position when the ENGine MASTER control switch is set to OFF?. The ECU. Both electrical motors. The HMU. The EIU.

What happens to the LP SOV when the ENGine FIRE P/B is released out?. It is driven to the open position. It remains in a neutral state. Both electrical motors drive it to the closed position. It sends a signal to the EIU.

What changes the available thrust in the CFM56-5B engine?. The power plant installation. The pylon. The programming plug on the Electronic Control Unit (ECU). The fan cowls.

What does the thrust reverser use to redirect the engine fan airflow?. 2 hydraulically operated pivoting blocker doors. 4 hydraulically operated pivoting blocker doors. 6 hydraulically operated pivoting blocker doors. 8 hydraulically operated pivoting blocker doors.

Which system controls the turbine clearance?. The compressor airflow control system. The transient bleed valve system. The turbine clearance control system. The FADEC system.