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13 Cards in this Set
- Front
- Back
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How many engine fire loops are there, and how many must sense a fire or overheat to activate a warning? |
There are 2, and both must sense a fire or overheat. |
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What happens if a fault is detected in one of the loops? |
The system must reconfigure for single loop operation. |
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Do APU loops detect fire, and overheat? |
No, fire only. |
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What happens to the fire detection system once power is initially applied to the aircraft? |
The entire fire detection/protection system is tested. |
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What happens when you pull an ENGINE FIRE SWITCH? |
1. Engine and spar valve closes 2. Bleed air valve closes 3. Hydraulics shut off 4. Engine generator breaker opens 5. Fire bottle is armed 6. Fire bell is silenced |
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What happens when you pull an APU FIRE SWITCH? |
1. Closes APU fuel valve 2. Closes APU bleed air valve 3. Opens APU generator breaker 4. Silences fire bell & horn 5. Arms APU fire extinguisher 6. Shuts down APU if auto shutdown did not occur |
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Will a fire cause an automatic shutdown of the APU? |
If a fire is detected on the ground with both engines shut down, the system will shut down the APU. |
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How many fire extinguisher bottles are there for the cargo compartments? |
There are 3 |
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What happens when the FWD CARGO SWITCH is armed? |
1. FWD cargo heat valves close 2. Left & right recirc fans shut off 3. Fire bell is silenced 4. FWD squib test function is removed 5. Galley power is removed |
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What happens when the AFT CARGO SWITCH is armed? |
1. AFT & Bulk heat valves close 2. Left & right recirc fans shut off 3. Fire bell is silenced 4. Equipment/lav/galley vent fans shut off 5. Inhibits packs from going to high flow 6. Galley power is removed |
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What happens when cargo bottles are fired? |
1. Bottle one discharges immediately 2. Other two bottles are discharged automatically 30 minutes after the first bottle was discharged.
3. If the plane lands prior to 30 minutes elapsed, the bottles will discharge on touchdown. |
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What fire system do the lavs have? |
Smoke detectors plus a heat activated extinguisher. |
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What fire system do the when wells have? |
A single loop overheat detector. |
