Fire Protection

Question 1

(767) What creates low pressure which causes sample air to be pulled through smoke detectors?

Answer 1

Center pneumatic duct pressure

Question 2

What occurs if both engine or APU fire detector loops fail?

Answer 2

(PW and 767) FIRE/OVHT SYS EICAS message annunciates.

Question 3

How many wheel well fire loops are installed?

Answer 3

Single fire detector loop

Question 4

(RR) what occurs if both engine fire loops fail?

Answer 4

Fire indication occurs

Question 5

(757) cargo compartment fire protection consists of what systems?

Answer 5

Cargo compartment smoke detection, cargo compartment fire warning, and cargo compartment fire suppression

Question 6

When is the engine or APU fire override switch required to be used?

Answer 6

If the respective switch fails to electrically unlock

Question 7

How many fire extinguishing bottles are installed for the APU on aircraft N362UP – 364UP?

Answer 7

2

Question 8

What does the SYS FAIL P-RESET light and FIRE/OVHT SYS EICAS message indicate?

Answer 8

Fire or overheat detection is inoperative for loops as shown on the status page.

Question 9

What action(s) silences the fire bell?

Answer 9

Pushing either Master/Warning Reset switch on the glareshield.

Question 10

How many fire extinguishing bottles are installed for engine fire control?

Answer 10

2

Question 11

How many fire extinguishers are installed for the APU (except for N362UP - N364UP)?

Answer 11

1

Question 12

What occurs after pushing the cargo fire switch?

Answer 12

Gradual aircraft depressurization occurs to approximate flight altitude

Question 13

(757) What motive for draws air through the main cargo smoke detectors

Answer 13

Aft E/E cooling fans

Question 14

What occurs when an engine fire switch is pulled out?

Answer 14

The fuel is shut off to the associated engine, the engine bleed valves are closed, the generator is tripped off, the hydraulic fluid is shut off, the fire extinguisher bottle is armed and reverse thrust is disabled

Question 15

What occurs if a fault is detected in one of the engine or APU fire detector loops?

Answer 15

If one loop fails, the system will automatically reconfigure to single loop operation

Question 16

(767) What occurs when the cargo fire switch is pushed?

Answer 16

Equipment cooling goes into override mode

Question 17

When does automatic testing of the engine fire and overheat detectors, APU fire detectors and cargo compartment smoke detectors occur?

Answer 17

When electrical power is initially applied or transferred

Question 18

What does the L or R engine overheat light and EICAS message indicate?

Answer 18

Overheat is detected in the engine nacelle