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777 Atlas Air > Fire Detection and Prevention > Flashcards

Fire Detection and Prevention Flashcards

1
Q

What unlocks the Engine Fire switch

A
  1. Fire detected (Fire Warning)
  2. FUEL CONTROL switch in CUTOFF
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2
Q

What happens when the Engine Fire switch is pulled

A
  1. Arms both engine fire switches
  2. Closes he associated engine and spar fuel valves
  3. Closes associated engine bleed valve
  4. Trips the associated generator
  5. Shuts off fluid to engine driven hydra pump
  6. Depressurises associated engine driven hydra pump
  7. Removes power to the thrust reverse isolation valve

x7 answers (DRCCATS)

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3
Q

What unlocks the APU fire switch

A

APU fire detected (APU Fire warning)

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4
Q

What happens when the APU Fire switch is pulled

A
  1. Arms APU fire bottle
  2. Closes APU fuel valve
  3. Closes APU Bleed valve
  4. Closes the APU inlet door
  5. Trips APU generator field and generator breaker
  6. Shuts down APU (If automatic shutdown failed)

x6 answers (CCCATS)

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5
Q

What happens when LWR AFT, LWR FWD and MAIN DECK cargo switches ARMED (All cargo decks)

A
  1. Turns OFF recirc fans
  2. Turns OFF law/galley vent fans
  3. Turns OFF cargo heat in respective compartment
  4. Turns OFF electrical outlets in respective compartment
  5. Turns OFF NGS
  6. Packs supply to flight deck and supernumerary area
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6
Q

What happens (additionally) to LWR decks when fire switches armed

A
  1. Arms all cargo extinguisher bottles
  2. Arms the selected compartment extinguisher valve
  3. Puts equipment cooling in OVRD mode
  4. Turns OFF aircon in respective compartment

x4 answers (Arms, Arms, Ovrd, Aircon)

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7
Q

What happens (additionally) to MAIN deck when fire switch armed

x4 answers

A
  1. Commands E/E cooling to flight deck equipment
  2. Turns OFF main deck compartment air in-flow
  3. Turns OFF AFT cargo air conditioning supply and exhaust
  4. Inhibits LWR cargo fire warnings
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8
Q

Should the APU automatically shutdown if fire is detected

A

Yes

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9
Q

Items with fire detection ONLY

A
  1. Flight deck crew rest compartment
  2. Main landing gear
  3. E/E cooling compartment
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10
Q

Items with fire detection and protection

4x answers

A
  1. APU
  2. Engines
  3. Lavatory
  4. Cargo compartments
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11
Q

How many fire detection loops in engine nacelle how does the system work

A
  • 2 loops
  • Normally requires x2 loops to detect a fire to give a warning. If one loop fails reverts to single loop detection. If both fail no detection possible.
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12
Q

System indications as a result of an engine fire detection

6x answers

A
  1. Fire bells
  2. Master warning
  3. EICAS message FIRE ENG L/R
  4. Fuel Control switch illuminated
  5. Engine Fire switch illuminated
  6. Engine Fire switch unlocks
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13
Q

System result of a engine overheat detection

A
  1. Caution beeper sounds
  2. Master Caution light illuminates
  3. EICAS message OVERHEAT ENG L/R
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14
Q

How many APU fire bottles

A

One

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15
Q

How many engine fire bottles

A

Two

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16
Q

How many fire detection loops for APU fire detection

17
Q

Does the APU have overheat detection

18
Q

How many fire detection loops APU have and how does the system work

A
  • 2 loops
  • Normally requires x2 loops to detect a fire to give a warning. If one loop fails reverts to single loop detection. If both fail no detection possible.
19
Q

System indications of an APU fire detection

x5 answers

A
  1. The fire bell sounds
  2. Master warning illuminates
  3. EICAS warning FIRE APU
  4. APU fire switch illuminates
  5. APU fire switch unlocks
20
Q

In unattended mode how many loops required for APU shut down and fire protection

21
Q

What electrical bus is fire protection attached

A

Hot Battery Bus

22
Q

What electrical bus is fire detection attached

A

Battery bus

23
Q

How is fire detected in the main gear wells

A

Dual fire detector loops

24
Q

How is fire detected for the cargo compartments

A

Smoke detectors

25
Q

How many zones for the Main deck

26
Q

How many zones for the Lower deck

A

three in each FWD and AFT compartment (Total 6)

27
Q

Cargo Compartment fire indications

x4 answers

A
  1. Fire bell
  2. Master warning
  3. EICAS warning FIRE CARGO MAIN/AFT/FWD
  4. Cargo fire switch illuminates
28
Q

How many fire bottles for the MAIN deck

29
Q

How many fire bottles for the FWD/AFT deck

30
Q

How are the fire bottles for cargo fire released

A
  • 2 bottles release contents immediately when commanded.
  • Remaining three release at a reduced rate after a time delay
31
Q

What happens to the MAIN deck if the DEPR/DISCH switch is pushed

A

Compartment begins controlled depressurization to a cabin altitude of approximately 23,000ft with the airplane altitude 25,000ft

32
Q

What flight deck indication available for Lavatory fire detection

33
Q

What crew action required for Lavatory fire protection

34
Q

Are loops automatically tested or manually

A
  • Automatic continuous testing and fault detection.
  • Manual test available EICAS FIRE TEST PASS indicates successful pass

777 Atlas Air (16 decks)

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