Fire Protection Flashcards
What fire detection/protection do the cargo
compartments have?
• The forward and aft cargo compartments
each have smoke detectors in a dual loop
configuration. Normally, both detection loops
must sense smoke to cause an alert.
• ETOPS aircraft have a total fire suppression
time of 195 minutes. This includes 180
minutes to land at an airport plus an
additional 15 minutes.
• Non-ETOPS aircraft provide for a 60-minute
diversion and a 15-minute reserve totaling 75
minutes of fire suppression.
Within how many minutes must you land after
initial discharge of the cargo bay fire suppression
system?
60 Minutes
(MAX8E/ -800E) – 180 Minutes
Note: E indicates ETOPS equipped aircraft.
During a Cargo Fire Test, the Detector Fault
light will illuminate under what condition?
If one or more detectors in the loop has failed.
What indications will you receive during a
successful Cargo Fire test?
• Fire Warning bell sounds
• Both Master FIRE WARN lights will illuminate
• Extinguisher lights will illuminate
• FWD and AFT cargo fire illuminate when all
detectors in selected loops respond to the fire
test
• Cargo fire bottle DISCH light illuminates
During cruise, the Cargo Fire (FWD/ AFT)
Warning light illuminates Red, Master Fire Warn lights
illuminate and the fire warning bell sounds. What
condition exists?
• At least one detector in each loop detects
smoke
• With power failed in one loop, at least one
detector on the remaining loop detects
smoke
With a cargo fire, what indications would you
expect to see after discharging the bottle?
After the initial indication of a cargo compartment fire and discharging the bottle, the FWD/AFT cargo fire
warning light(s) can extinguish, remain illuminated, or
re-illuminate over the remainder of the flight
On the ground during engine start and after the
pushback Crew has been cleared off, they give you
hand signals for an Engine Fire with no fire
indications on the flight deck. What may be the actual condition?
You may have an Engine Tailpipe Fire.
What occurs if one of the two engine fire
detection loops fail with the OVHT DET switch in
NORMAL?
If one loop fails with the OVHT DET switch in
NORMAL, that loop is automatically deselected and
the remaining loop functions as a single loop
detector. There is no flight deck indication of single
loop failure.
What powers the engine overheat and fire
detection? Extinguishing?
• Engine overheat and fire detection powered
by the battery bus.
• Engine fire extinguishing powered by the hot
battery bus
When selecting OVHT/FIRE during the
Fire/Overheat Warning Test, you notice the FAULT
Light is illuminated. What may be the problem and
how do you determine in which engine the fault
occurred?
If the FAULT light illuminates, a detection loop is
inoperative. The related ENGINE FIRE WARNING
switch and ENG OVERHEAT light do not illuminate.
To determine the inoperative loop follow the
procedure “To Determine the Specific Inoperative
Loop” in AOM 16.8.1.
During a Cargo Fire Detection System Test,
how can you determine if a loop is inoperative?
If a cargo fire warning light does not illuminate and
the DETECTOR FAULT light does illuminate, a
detection loop is inoperative
What consideration, with regards to the
landing gear, should be taken during execution of the Wheel Well Fire checklist in QRH NNC 8 Fire
Protection following a wheel well fire warning?
Landing gear speed limitations should be observed
during this checklist
In an ETOPS aircraft with an ARMED Cargo
Fire switch what occurs when pushing the Cargo Fire
Discharge switch?
The first extinguisher bottle discharges into the
selected compartment and the timer set to discharge the second extinguisher bottle with a reduced metered flow
