8. Fire Protection Flashcards
Recall important considerations if FIRE WARNING test is conducted using BATTERY POWER only
All indications will be the same as with “External Power Available” EXCEPT the First Officer’s MASTER WARNING light will not illuminate and the cyan PODS TEST PASS alert message on the EAD will not be displayed
**Note: After APU is started and all busses are powered, the Fire Warning test must be reaccomplished to confirm all correct indications
Recall indications of an ENGINE FIRE
- MASTER WARNING lights illuminate
- Aural/vocal warnings sound - “FIRE LEFT ENGINE”
- L/R ENG FIRE handle light(s) illuminate
- FUEL switch light(s) illuminate
- ENGINE L/R FIRE alert(s) displayed on EAD
Recall indications of an APU FIRE
- MASTER WARNING lights illuminate
- APU automatically shuts down
- Aural/vocal warnings sound - “APU FIRE”
- APU FIRE alert displayed on the EAD
- FIRE light on external APU ground control panel illuminates
Recall indications of CARGO SMOKE or FIRE
- MASTER WARNING lights Flash
- MASTER CAUTION lights Illuminate
- Aural/vocal warnings sound - “CARGO SMOKE”
- CARGO SMOKE FWD (AFT) level 3 alert on EAD and AIR SD
- “Land at Nearest Suitable Airport” – Displayed on CONSEQUENCE Page
- DISCH CARGO AGENT – Displayed on EAD and AIR SD
- AIR SD will display RED triangles
- AFT/FWD CARGO SMOKE AGENT DISCH Switchlight will flash “PUSH”
**Note: Approximately one minute after the first bottle has been discharged, the illuminated amber AFT/FWD CARGO SMOKE AGENT DISCH “PUSH” Switchlight will extinguish and be replaced by an amber “LOW” light indicating the first Halon bottle has discharged. A CARGO AGENT 1 LO alert will also be displayed on the EAD
**Note: Approximately six minutes later, similar alerts will direct the crew to discharge the second Halon bottle into the appropriate cargo compartment. The second bottle, however, discharges at a much slower rate and the CARGO AGENT 2 LO alert will be delayed for about 2 hours
Recall cockpit indications of a LAVATORY FIRE
- MASTER CAUTION lights illuminate
- LAVATORY SMOKE alert on EAD
- HI-LO chime on PA
Recall the operation of the Engines/APU LOOPS switches on the AFT Overhead Panel
**Note: The fire detection system consists of two independent, heat-sensitive detector loops located in each engine and the APU. Each loop provides both fire and overheat detection
BOTH (Normal position) – minimizes false fire warnings since both loops have to detect fire or overheat condition before activating a fire warning
A/B - Used for dispatch or continued flight with an inoperative loop. In this condition, a fire warning will occur if the selected loop detects a fire or overheat condition
Recall features of the Engine Fire Extinguishing Controls and Indicators
FIRE TEST
Tests both A and B loops
AGENT 1/2 LOW
Illuminated – Respective agent has been discharged
FAULT TEST
(Maintenance Use Only)
ENG FIRE Handle
- Light Illuminated – Associated engine fire is detected or test in progress
- Pull (Fully Extended) – Shuts off associated engine FUEL and HYDRAULIC shutoff valves, trips GENERATOR off and silence AURAL/VOCAL warnings
- Rotate (After pulling) – Discharges respective agent into the engine
Recall features of the APU Fire Extinguishing Controls and Indicators
APU Ground Control Panel
APU FIRE Light -
Illuminated – APU compartment fire detected
AGENT 1/2 LOW Light -
Illuminated – Respective agent has been discharged
APU SHUT OFF Switch -
NORMAL – Normal position
SHUT OFF – Shuts down APU and arms extinguishers
FIRE AGENT DISCHARGE 1/2 Switch
NORMAL – (Guarded) Normal position
DISCHARGE – Discharges respective agent into APU compartment
Recall features of the APU Fire Extinguishing Controls and Indicators
FWD Overhead APU Panel
APU FIRE CONT Switch
NORM – Normal position
OFF & AGENT ARM – Immediately shuts down APU and arms the fire extinguishers
APU FIRE AGENT Switch (NO 1/NO 2)
OFF – Normal position
DISCH – Discharges selected fire agent into APU compartment
Recall features of the Cargo Smoke Detection and Fire Suppression Controls
CARGO SMOKE FWD/AFT Switch (2)
- SINGLE* – Selects single smoke detection system
- NORM* – Selects normal dual detection system
AFT/FWD CARGO SMOKE AGENT DISCH Switchlight (4)
PUSH – light flashes (amber) to indicate fire/smoke is detected in cargo compartment. Pushing switchlight discharges the fire extinguishing agent and changes the light from flashing to steady. PUSH light will extinguish when the LOW light illuminates.
LOW light illuminates (amber) after the fire extinguishing agent has been discharged. PUSH light extinguishes.
CARGO SMOKE Test Button
Push and Hold – Tests system
** Note: The Cargo Smoke test is disabled for four minutes after establishing electrical power
Recall components of the ENG and APU fire extinguishing system
The engine and APU fire extinguishing system consists of two fire extinguisher agent containers and associated AGENT LOW lights
Each fire bottle has separate discharge heads and distribution lines to each engine and the APU
Recall features of the CARGO FIRE Detection system
The Cargo Smoke Detection System consists of multiple photoelectric smoke detectors mounted in recessed pans in each cargo compartment ceiling
The Cargo Smoke Detection System consists of multiple photoelectric smoke detectors mounted in recessed pans in each cargo compartment ceiling
The system uses two Halon fire extinguishing agent bottles connected to both forward and aft cargo compartments
**Note: The system can suppress a fire for approximately 80 minutes
**Note: The system is designed as a dual detection system and normally requires two detector activations to trigger the alarm. However, selection of the SINGLE position, as appropriate, on the CARGO SMOKE DET SYS panel will allow only one detector to activate the alarm
