Fire Protection Flashcards
(36 cards)
Which areas of the aircraft have Fire Detection systems?
Engines, APU, Main Wheel Well, Lower Cargo Compartment
Which areas have fire Extinguishing/Suppression systems?
Engine, APU, Lower cargo compartment
SH 8.010 pg 14
What does an illuminated Master FIRE WARN (red) light indicate? What causes it to
illuminate?
FIRE or TEST
Extinguished by pushing light or using BELL CUTOUT switch
SH 8.010 Pg 4 - check this info
SH 8.010 Pg 2
What causes the Fire Warning Bell to sound?
Comes on in conjunction with the FIRE WARN light (test or actual fire detected)
SH 8.010 Pg 2
How can it be silenced?
Pushing either FIRE WARN lights or the BELL CUTOUT.
SH 8.010 Pg 2
What does an illuminated Engine Overheat (amber) light indicate?
an overheat condition
SH 8.010 pg 3
What causes it to illuminate?
Extinguish?
The temperature of a detector has increased to a predetermined limit
SH 8.010 pg 4
Temperature drops below the predetermined limit - COOLS OFF
SH 8.010 pg 4
How many engine fire extinguisher bottles are there?
2 total
SH 8.010 pg 4
Can these bottles be discharged into both engines, or only the respective engine?
2 bottles total - 2 OR 1 discharges into one engine
SH 8.010 pg 5 schematic
What powers the Engine Overheat and Fire Detection system?
Detection = BAT BUS
SH 8.010 pg 3
What powers the Engine Fire Extinguishing system?
Extinguish = HOT battery bus
SH 8.010 pg 3
What does pulling the engine fire switch do?
Lighter colors panels on overhead
Just think ISOLATE & VENTILATE and affects those panels
B - Bleed valve closes
R - Reverser disabled
G - Generator tripped
H - Hydraulic valve closes
F - Fuel valves close (engine fuel valve & spar valve)
S - Squibs & Switch (squib armed & switch able to be turned)
SH 8.010 pg 3
What does rotating the engine fire switch do?
Electronically “fires” a squib, discharging the extinguishing agent into the
related engine. Rotating the switch the other way discharges the remaining
bottle.
SH 8.010 pg 6
How many detector loops does each engine have?
2 loops
What do the loops provide?
Fire and overheat detection
SH 8.010 pg 3
What are the indications of a single loop failure?
No flight deck indication of a single loop failure
SH 8.010 pg 4
What are the indications of a dual loop failure?
FAULT light (with OVHT DET switch in NORMAL) SH 8.010 pg 4
What does an illuminated FAULT (amber) light indicate?
What causes it to illuminate?
Extinguish?
Dual loop failure (with OVHT DET switch in NORMAL)
A or B loop failure (with switch in associated position)
SH 8.010 pg 4
The fault detection loops detects a fault
SH 8.010 pg 4
Doesn’t extinguish
What does an illuminated Engine Fire (red) Switch indicate?
A fire (or a test) *handle is unlocked when lit*
What are indications of an engine fire?
Fire Warning Bell Both master FIRE WARN lights illuminate Related engine fire switch illuminates *related engine overheat alert indications likely illuminate SH 8.010 pg 4
What are the components of the APU Fire Extinguishing system?
APU Fire switch
Single APU Fire bottle
APU bottle discharge light
SH 8.010 pg 9
How many fire extinguisher bottles does the APU fire extinguishing system have?
ONE
SH 8.010 pg 9
What does pulling the APU Fire (red) switch up do?
GBFISH G - generator tripped B - bleed valve closed F - fuel deactivated I - inlet door closed S - squib armed H - handle unlocked *auto shutdown should have occurred, but this will happen anyways if you pull the handle up* SH 8.010 pg 9
Rotating the switch APU Fire (red)?
Fires the APU squib into the APU
