ATA 70 ENGINE

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

The power plant installation includes the engine, the engine inlet, the exhaust, and the fan cowls only. false. true.

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

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. false. true.

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 available thrust. To monitor the engine temperatur. To adjust the fuel consumption.

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

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

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

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

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

Which component of the fuel system is operated by the gearbox?. The fuel pump. The fuel nozzle. The filter.

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

Where is the hydraulic shut-off valve located?. 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 collect and drain waste fluids and vapors from engine systems and accessories. To provide air to the engine. To cool the engine.

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

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

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

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

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

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

The engine fuel system is designed only to supply Fuel Flow (FF) into the combustion chamber. false. true.

The fuel coming from the A/C tanks is driven by the HP stage of the fuel pump. true. false.

The fuel from the fuel pump goes directly to the nozzles without passing through any filter. false. true.

The FADEC is not repowered when the engine start selector is selected to CRANK. false. true.

The ECU is supplied from the aircraft electrical power when N2<60%. true. false.

The Control Alternator does not supply the ECU when the engine is running above 58% of N2. false. true.

The FADEC is automatically de-powered in the air, through the EIU, after engine shutdown. false. true.

Releasing the ENGine FIRE P/B out does not affect the ECU power. true. false.

Where is the ECU of the FADEC system located?. On the engine fan case right hand side. On the aircraft's tail. Inside the cockpit.

What does the FADEC system consist of?. A dual channel Electronic Control Unit (ECU) with its associated peripherals. Only its associated peripherals. A dual channel Electronic Control Unit (ECU) without peripherals.

Which of the following is NOT a function of the FADEC system?. Fuel tank monitoring. Transient Bleed Valve (TBV) control. Power management control.

What happens to the ECU power supply when the engine N2 is below 58%?. It is supplied by the aircraft's 28 VDC through the Engine Interface Unit (EIU). It is not supplied power. It is supplied by the Control Alternator.

What does the FADEC system manage?. Both the engine thrust and performance optimization. Neither the engine thrust nor the performance optimization. Only the performance optimization.

When is continuous ignition manually selected?. When IGNition START is re- selected with an engine running. When the ECU detects a malfunction. When the aircraft is on the ground.

What does the FADEC do when it detects an ignition delay during start?. It provides continuous relight. It switches to manual mode. It aborts the start sequence.

What is the aircraft configuration for engine CRANK modes?. APU running and APU BLEED on, FADEC 1 and 2 powered. APU off and APU BLEED on, FADEC 1 and 2 unpowered. APU running and APU BLEED off, FADEC 1 and 2 unpowered.

What happens when CRANK is selected on the ground?. The ECU initiates a motoring sequence after action on the MANual START P/B. the ECU cuts off the ignition. the ECU initiatis a shutdown sequence.

for how long should you motor the engine with the master control switch in the on position during a wet crank. 15 seconds. 60 seconds. 30 seconds.

what should you do after a wet crank of 15 seconds maximum. continue to dry crank the engine for 60 seconds. continue to dry crank the engine for 30 seconds. set the selector back to MODE normal position immediately.

how is the fan case and its accessories cooled. by air entering two flush inlet scoops located on the inlet cowl outer barrel. by using engine oil. by using coolant fluid.

where does the air exit after cooling the fan compartment. through an outlet port located in the lower aft section of the right -hand fan cowl door. through the engine intake. through the engine exhaust.

how is the core compartment cooled and ventilated. by fan air entering flush inlets located at the forward section of the core cowl. by using engine oil. by using coolant fluid.

where does the air exit after cooling the core compartment. through the annular vent located at the interface between the core cowl and the primary nozzle. through the engine exhaust. through the fan compartment.

what does the engine provide sources for. to feed the active clearance control subsystems and to supply the inlet cowl anti-ice and the engine bleed system. to cool the engine. to provide continuous ignition to the engine.