Fire Protection

Question 1

Automatic testing of the cargo compartment smoke detectors occurs:

Answer 1

When electrical power is initially applied or transferred.

Question 2

(RR) In addition to the detection normally provided, turbine and strut (pylon)
overheat detectors are installed. Are these additional loops also continuously
monitored for faults?

Answer 2

No. The strut (pylon) and turbine overheat detectors are
tested for faults only during power application or
transfer and by pushing the Engine Test Switch.

Question 3

______ smoke detectors installed in the Pilot Rest Module will give an indication of
smoke to module occupants, as well as the flight crew via EICAS message CREW REST
SMOKE.

Answer 3

Four

Question 4

(767) With an APU fire on the ground, what automatically occurs?

Answer 4

Automatic APU shutdown occurs.

Question 5

The main gear wheel well has fire detection and warning only (no fire extinguishing
system). How many fire detection loops provide warning of a main gear wheel well
fire?

Answer 5

The main wheel well fire detection system consists of a

single fire detection loop.

Question 6

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

Answer 6

If one loop fails, the system will automatically

reconfigure to single loop operation

Question 7

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

Answer 7

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

Question 8

What occurs when an Engine Fire switch is PULLED OUT?

Answer 8

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 9

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

Answer 9

When electrical power is initially applied or transferred

Question 10

What occurs after pushing the Cargo Fire switch?

Answer 10

Gradual aircraft depressurization occurs to approximate

flight altitude

Question 11

How many fire extinguishing bottles are installed for the APU (except for N362UP ‐
N364UP)?

Answer 11

1

Question 12

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

Answer 12

2

Question 13

What action(s) silences the fire bell?

Answer 13

Pushing either Master/Warning Reset switch on the

glareshield

Question 14

How many wheel well fire loops are installed?

Answer 14

Single fire detector loop

Question 15

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

Answer 15

Fire or overheat detection is inoperative for loops as

shown on the Status page

Question 16

What does the L or R ENG OVHT light and EICAS message indicate?

Answer 16

Overheat is detected in the engine nacelle or (RR)

overheat is detected in the engine nacelle or strut (pylon)

Question 17

When is the Engine or APU Fire Override switch required to be used?

Answer 17

If the respective switch fails to electrically unlock

Question 18

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

Answer 18

Aft E/E cooling fans

Question 19

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

Answer 19

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

Question 20

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

Answer 20

Fire indication occurs

Question 21

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

Answer 21

Cross over duct pneumatic duct pressure

Question 22

How many fire extinguishing bottles are installed for the APU on aircraft N362UP –
N364UP?

Answer 22

2