Fire Protection Flashcards
FIRE_001
Describe the indications of an engine fire warning:
MD-88 & 90
- Fire bell then vocal warning “FIRE, LEFT/RIGHT ENGINE”.
- Illuminated L/R ENG FIRE handle.
MD-88 only:
- L/R LOOP A and LOOP B lights.
- FIRE DETECTOR LOOP message.
- Both MASTER CAUTION lights.
MD-90 only:
- Illumination of respective FUEL SWITCH (if ON).
FIRE_002
Explain the function of the AGENT LOW Light (amber):
Illuminated - Respective fire extinguishing agent has been discharged (pressure low).
FIRE_003
Recall how cargo fire suppression is accomplished?
- Cargo fire suppression is accomplished through the use of two fire bottles.
- Bottle #1: a high rate discharge bottle, used to rapidly flood affected cargo compartment with halon and smother fire.
- Bottle #2: low rate discharge bottle that slowly releases halon into the cargo compartment, extending fire suppression effectiveness.
NOTE: The two Cargo fire bottles are separate from the bottles used for the engines and APU.
FIRE_004
Describe the indications of a cargo fire warning:
- Red CARGO FIRE light on OAP.
- MASTER WARNING lights on the glareshield.
- High pitched tone from aural alerter which can be silenced by pushing FIRE BELL OFF button between engine fire handles.
- FIRE light on cargo fire control panel from alarming compartment.
- ARMED light of the alarming compartment with BTL 1 DISCH light to indicate automatic suppression system arming has occurred.
FIRE_005
Describe the cockpit indications of an APU Fire warning:
- Aural/vocal warning “APU FIRE” (3 cycles).
- Horns (cockpit [3 cycles] and external [continuous]).
- APU FIRE lights (cockpit and external).
- Both MASTER WARNING lights.
MD-88 only:
- APU LOOP A and B.
- FIRE DETECTOR LOOP message.
- Both MASTER CAUTION lights.
NOTE: With APU master switch in the OFF position, all APU aural warnings are inhibited.
FIRE_006
Recall the function of Cargo Fire Detection system:
- Cargo fire detection is accomplished through the use of a dual loop system in each smoke detector unit.
- Each unit incorporates 2 smoke detectors and 2 heat sensors.
- One smoke detector and one heat sensor make up one loop.
- Cargo fire warning will activate if selected loop(s) detect smoke and/or heat.
FIRE_007
Recall how Engine and APU fire suppression is accomplished:
- Engine and APU fire suppression is accomplished through the use of two fire bottles.
- Each bottle has separate discharge heads and distribution lines to each engine and APU.
FIRE_008
Function of APU FIRE CONT Switch:
- NORM - Normal position.
- OFF & AGENT ARM - Immediately shuts down APU and arms fire extinguishers.
FIRE_009
Recall the function of ENG FIRE Handle (red):
- Light Illuminated - Associated engine fire is detected or system fire test is in progress.
- Pull - (Fully extended position):
- Silences the aural warning, shuts off associated engine fuel (valve at wing spar), hydraulic and pneumatic systems, and trips generator.
- MD-90 only: Shuts off fuel at the fuel metering unit and as well as the wing spar.
- Rotate - (With additional pulling) Discharges respective fire extinguishing agent into engine cowling.
FIRE_010
Recall the cargo fire bottles have different discharge rates and why:
- Bottle #1 is a high rate discharge bottle that is used to rapidly flood the affected cargo compartment with halon and smother the fire.
- Bottle #2 is a low rate discharge bottle that slowly releases halon into the cargo compartment, extending fire suppression effectiveness.
- NOTE: Bottle #2 will not automatically discharge if landing has occurred.*
- NOTE: #1 bottle should always be discharged first to achieve the maximum fire knockdown. #2 bottle should be discharged 15 min later. Due to discharge rate differences, firing both fire bottles at the same time will DECREASE fire suppression capability*
FIRE_011
Recall how long cargo fire bottles give the crew fire suppression:
- The two bottles working together give flight crew approx sixty minutes of fire suppression.
