Test on Aircraft Engine Fire Systems

Question 1: A pneumatic-type continuous-loop system is considered one type of engine fire detection system.

A. Ano

B. Ne

Explanation: The four types of engine fire detection systems are the thermoswitch system, thermocouple system, thermistor-type continuous-loop system, and pneumatic-type continuous-loop system.

Question 2: A thermal switch-type fire detection system is capable of indicating a general overheat condition.

A. Ano

B. Ne

Explanation: A thermal switch-type fire detection system is a spot-type fire detection system and cannot indicate an overheat condition.

Question 3: According to the study materials, what is the effect of a break in a continuous-loop fire detection system?

A. The system will be completely inoperative and unable to detect a fire.

B. The system will display a fault during testing but will still be able to warn of a fire.

C. The system will automatically discharge the fire extinguishing agent.

D. The system will only be able to detect a general overheat condition, not an actual fire.

Explanation: A break in a continuous-loop fire detection system will cause the unit to show a fault when it is tested, but it will still warn of a fire.

Question 4: According to the study materials, which of the following actions occur when the pilot pulls the fire-pull T-handle in the flight deck of a jet aircraft?

A. The bottle discharge switch is uncovered and armed

B. The engine starter is engaged

C. Fuel is shut off to the engine

D. The hydraulic pump low-pressure lights are deactivated

Explanation: When the pilot pulls the fire-pull T-handle, the bottle discharge switch is uncovered and armed, fuel is shut off to the engine, and the hydraulic pump low-pressure lights are deactivated. The engine starter is not engaged when the fire-pull T-handle is pulled.

Question 5: The current produced by the heated thermocouple directly closes the slave relay.

A. Ano

B. Ne

Explanation: The current produced by the heated thermocouple closes the sensitive relay, and current through the contacts of the sensitive relay then closes the slave relay.