Fire Protection Flashcards
Automatic testing of the cargo compartment smoke detectors occurs:
When electrical power is initially applied or transferred.
(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?
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.
______ 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.
Four
(767) With an APU fire on the ground, what automatically occurs?
Automatic APU shutdown occurs.
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?
The main wheel well fire detection system consists of a
single fire detection loop.
What occurs if a fault is detected in one of the engine or APU fire detector loops?
If one loop fails, the system will automatically
reconfigure to single loop operation
What occurs if both engine or APU fire detector loops fail?
(PW and 767) FIRE/OVHT SYS EICAS message annunciates
What occurs when an Engine Fire switch is PULLED OUT?
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
When does automatic testing of the engine fire and overheat detectors, APU fire
detectors and cargo compartment smoke detectors occur?
When electrical power is initially applied or transferred
What occurs after pushing the Cargo Fire switch?
Gradual aircraft depressurization occurs to approximate
flight altitude
How many fire extinguishing bottles are installed for the APU (except for N362UP ‐
N364UP)?
1
How many fire extinguishing bottles are installed for engine fire control?
2
What action(s) silences the fire bell?
Pushing either Master/Warning Reset switch on the
glareshield
How many wheel well fire loops are installed?
Single fire detector loop
What does the SYS FAIL P‐RESET light and FIRE/OVHT SYS EICAS message indicate?
Fire or overheat detection is inoperative for loops as
shown on the Status page
What does the L or R ENG OVHT light and EICAS message indicate?
Overheat is detected in the engine nacelle or (RR)
overheat is detected in the engine nacelle or strut (pylon)
When is the Engine or APU Fire Override switch required to be used?
If the respective switch fails to electrically unlock
(757) What motive force draws air through the main cargo smoke detectors?
Aft E/E cooling fans
(757) Cargo compartment fire protection consists of what systems?
Cargo compartment smoke detection, cargo
compartment fire warning, and cargo compartment fire
suppression
(RR) What occurs if both engine fire loops fail?
Fire indication occurs
(767) What creates low pressure which causes sampled air to be pulled through
smoke detectors?
Cross over duct pneumatic duct pressure
How many fire extinguishing bottles are installed for the APU on aircraft N362UP –
N364UP?
2
