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22 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Indications of an APU fire (5)
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-Bell
-FIRE WARN lights -APU fire handle illuminates -wheel well horn and light -APU automatically shuts down |
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Rotating the APU fire handle in either direction does what?
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electrically fires the squib which punctures the seal of the freon bottle, rotating the other way then does nothing.
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APU yellow disk missing? Red?
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Bottle has been intentionally fired. Fired for some other reason.
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APU DET INOP light means?
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No fire detection and no auto shutdown for APU.
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During cargo fire warning, what lights will go on?
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DET lights, FIRE light, and the master caution OVHT/DET annunciator remain illuminated until fire warning goes away.
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During cargo fire warning, which of the lights may cycle on and off?
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DET lights due to changes in smoke density and airplane attitude.
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What happens when all cargo DET lights go out?
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System automatically resets itself to normal mode of operation.
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How long does it take for the second halon bottle to discharge?
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Light goes on around 40 minutes, fire suppression capability lasts around 60 minutes.
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Can you use one bottle in each compartment?
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Warning against it, it will result in ineffective portions sent to both pits.
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What are the possible consequences of liquid spills in the cockpit?
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Cause a false fire light on the CARGO DETECTION SUPPRESSION panel or discharge the bottles. Other indications may not exist or be inconsistent.
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What does FAULT light on engine/apu fire panel mean?
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There is no fire detection on at least one engine.
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What do nozzles look like on lav fire extinguishers before and after dischage?
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Black before, change to aluminum/silver after.
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Limitations of Wheel Well fire detection system?
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No overheat detection, fire protection, or fault detection. Just put the damn gear down.
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Pulling the Engine Fire Handle does what?
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-Closes fuel shutoff valve
-Bleed air valve -hydraulic fire shutoff valve -Disarms T/R and the engine driven hydraulic pump low pressure light -Arms squib and allows handle to rotate -opens generator field |
3- Valves closed
2- Lights Disarmed (eng hyd pump/rev) 1- Extinguisher Open Gen Field |
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Pulling APU fire handle does what?
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-closes APU fuel shutoff valve, APU bleed air valve and the APU inlet door
-Arms the squib and allows handle to rotate -opens the generator field |
Handle unlocks
Auto Shutdown Door Closes Two fuel valves closed Open Generator Field Bleed Valve closes |
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APU fire bottle minimum pressure?
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540 psi.
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When is the OVHT/FIRE test valid for a the WHEEL WELL light?
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Only if AC transfer bus 1 is powered.
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What is the minimum fire extinguisher bottle pressure for the engine bottles?
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760 psi
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FAULT/INOP switch to FAULT/INOP?
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-both MCLs
-OVHT/DET annunciator panel light -FAULT light -APU DET INOP light |
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FAULT/INOP switch to OVHT/FIRE? 11 in cockpit, 1 in wheel well
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-both FIRE WARN lights
-both MCLs -OVHT/DET annunciator panel light -Engine 1, APU, Engine 2 fire handle lights -ENG1 ENG2 OVERHEAT lights -WHEEL WELL light -APU fire warning light in wheel well |
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How many fire detectors are installed on the APU?
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One. No overheat.
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What does the APU fire extinguishing system consist of?
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-one freon bottle
-APU fire handle -extinguisher test -APU BOTTLE DISCHARGED light |
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