Fire Protection Flashcards
How many Fire Detection Loops are installed in each Engine and the APU?
2
Fire detection and protection is available in which areas?
Engines, APU, cargo compartments, and Lavatory
Overheat detection is available in which areas?
Engines
What areas have fire detection but no protection?
Crew rest and main gear wheel wells
What happens if one APU fire loop detects a fire?
The APU fire warning activates , APU shuts down, and if on the ground, the APU fire bottle automatically discharges
On N570-577UP, if any cargo fire switch is armed what communication equipment is no longer available?
Both SATCOM radios
Which cockpit APU fire warning can be cancelled?
Master warning lights
Which air system is used to induce airflow through the cargo smoke detectors on the freighter aircraft?
Center bleed air duct
What does the EICAS message >DET FIRE/OHT 1 mean?
Engine fire or overheat detection loops A and B have failed in engine 1
When will the EICAS FIRE warning message no longer be displayed?
If the fire condition no longer exists
When do the Engine Fire Switches automatically unlock?
- When the Fuel Control switch is in cutoff,
or - For an Engine Fire warning.
On the BCF what happens when a Lower Cargo Compartment Fire DISCH switch is pressed?
Tow fire extinguisher bottles discharge immediately and the remaining 4 meter out over a period of 334 minutes or touchdown, whichever occurs first
What happens when either the FWD or AFT Cargo Fire switch is selected to ARMED?
- Turns off 2 packs,
- arms lower cargo compartment fire extinguishers,
- configures equipment cooling to override mode,
- turns off all airflow and heat into lower cargo compartments,
- closes master trim air valve
How many fire extinguisher bottles are installed on the BCF for Lower Cargo Compartment fire protections?
6
For any given engine, how many fire extinguisher bottles can be discharged into one engine?
2
Assuming the dual loop fire /overheat detector is operating normally, how many loops must detect an overheat condition to cause the OVHT ENG 1,2,3,4 NAC caution message to be displayed?
Both
For the APU dual loop fire detector how many loops must detect a fire if both loops are operating normally?
1
Which wheelwells have fire detection
Main gear
Which fuel valves are closed if an engine fire switch is pulled?
Engine and spar
What happens automatically if the APU detects a fire inflight?
APU shuts down
What happens if only one loop of a cargo compartment smoke detector detects smoke?
Nothing, both loops must detect smoke in order to activate a warning in the cockpit
How many fire extinguisher bottles are installed on the Freighter for Lower Cargo Compartment fire protection?
4
If one Fire or Overheat Loop on an engine fails, will a fire be detected?
Yes, the system will automatically reconfigure fire and overheat loops to single loop operation
When will an engine fire switch unlock?
Override switch is depressed and light is illuminated in the engine fire switch
Which of the following will not happen when an engine fire switch is pulled?
Fire bell will silence
Fire bottle A on the left wing can be discharged into which engine?
1 or 2 only
What indication is available to confirm an Engine Fire Bottle has discharged?
- BTL_DISCH light near the engine fire switch will illuminate
and - EICAS advisory alert message >BTL LOW_ENG_ will be displayed.
What happens if smoke is detected in the Lavatory?
An aural warning will sound
How many Dual Loop Smoke Detectors do the FWD and AFT Lower Lobe Cargo Compartments have?
4
How many fire bottles does the APU have?
1
Sample air is drawn through the Freighter main deck smoke detectors using?
Center bleed duct
What are the indication of a main deck fire?
-
MAIN DECK illuminated in the Main Deck Fire Arm Switch
and - FIRE NM DK FWD, MID, or AFT or FIRE MAIN DECK EICAS warning alert message,
- fire bell, and
- Master warning light
How many fire extinguisher bottles does the BCF have for the forward and aft cargo compartments?
6
What happens to the packs when the main deck fire arm switch is armed?
Packs 2 and 3 shutdown
After arming the main deck fire arm switch what occurs when the DEPRESS switch is pushed?
Cabin depressurizes to 25,000’
What indications are present if smoke is detected in a Lower Lobe Cargo Compartment?
- FWD or AFT illuminated in the Lower Cargo Fire Arm Switch and
- fire bell and master warning light
The main deck on the Freighter has ____ dual loop smoke detectors?
16
On the Freighter, what happens when the Lower Lobe Cargo Compartment Fire DISCH Switch is pressed?
2 fire extinguisher bottles discharge immediately and the remaining two meter out over a period of 210 minutes or touchdown, whichever occurs first
