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Mesa E-JET EMB175 Study Guide Questions > Fire Detection/Protection Questions > Flashcards

Fire Detection/Protection Questions Flashcards

1
Q

What airplane systems have fire detection and protection?

A
  • Engines
  • APU
  • Cargo Compartments
  • Lavatories
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2
Q

Are the cockpit and cabin protected from fire?

A
  • Yes
  • Cockpit 1 hand-held Halon fire extinguisher
  • Cabin 3 hand-held Halon Fire extinguishers (1 fwd. & 2 aft); one water extinguisher (aft, aircraft right)
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3
Q

How are the engines and APU protected from fire?

A
  • Engines 2 Halon fire bottles
  • APU 1 Halon fire bottle dedicated to the APU only
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4
Q

Can both engine fire bottles be used for one engine if needed?

A
  • Yes
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5
Q

What is the power source for engine and APU fire detection and protection?

A
  • Engine Detection DC ESS
  • Engine Protection HOT BATT
  • APU Detection DC ESS
  • APU Protection DC ESS
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6
Q

Describe the engine and APU fire detection system

A
  • Engine 8 pneumatic fire detectors (2 loops) per engine
  • APU 2 pneumatic fire detectors (2 loops)
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7
Q

Describe the fire test

A
  • Press and hold the test button on the overhead panel for a minimum of 3 seconds, but no more than 10 seconds if the APU is running or it will automatically shut down the APU
  • Aural warnings
     Fire bell
     Triple chime
  • Visual indications
     Overhead panel
  • Fire handle 1
  • Fire handle 2
  • Cargo smoke (FWD) extinguisher button
  • Cargo smoke (AFT) extinguisher button
  • APU extinguisher button
  • APU EMER STOP (top half of button)
     Glare shield
  • Master warning light (left)
  • Master warning light (right)
     EICAS
  • ENG 1 FIRE (CAS message)
  • ENG 2 FIRE (CAS message)
  • CARGO FWD SMOKE (CAS message)
  • CARGO AFT SMOKE (CAS message)
  • APU FIRE (CAS message)
  • FIRE (Engine 1 ITT gauge)
  • FIRE (Engine 2 ITT gauge)
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8
Q

What happens when an engine fire handle is pulled?

A
  • Closes respective engine fuel SOV
  • Closes respective engine hydraulic SOV
  • Closes respective engine bleed SOV
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9
Q

What is an indication of an APU fire?

A
  • Fire bell
  • Red stripe in the EMER STOP button
  • APU FIRE is displayed on the EICAS
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10
Q

Will the APU automatically shut down if a fire is detected?

A
  • Only on the ground
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11
Q

What happens if the APU EMER STOP button is pushed after a fire has been detected?

A
  • APU shuts off immediately without a 1-minute cool-down
  • APU fuel SOV closes
  • APU FIRE EXTG button illuminates
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12
Q

What happens if the APU EMER STOP button is not pushed after a fire has been detected?

A
  • After one minute the APU FIRE EXTG button illuminates
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13
Q

Will the APU fire extinguisher automatically discharge?

A
  • No
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14
Q

How many smoke detectors are installed in the cargo compartments?

A
  • 3 detectors in the FWD compartment
  • 2 detectors in the AFT compartment
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15
Q

What happens to the forward cargo compartment in the event smoke is detected?

A
  • Recirculation fan shuts off
  • Ventilation outflow valve closes
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16
Q

What is the purpose of the recirculation fan shutting off and the ventilation outflow valve closing when smoke is detected in the cargo bays?

A
  • Prevents oxygen from entering the compartment
  • Prevents Halon agent from escaping into the aircraft’s cabin
17
Q

How many extinguishing bottles are installed for the cargo compartments?

A
  • 2 bottles used for both compartments
  • 1 high-rate bottle and 1 low-rate bottle
18
Q

What is the difference between the high-rate bottle and the low-rate bottle?

A
  • High-rate bottle saturates the compartment immediately
  • Low-rate bottle maintains saturation over a duration of time
19
Q

How long will the low-rate bottle remain active in the compartment?

A
  • 60 minutes
20
Q

Can one bottle be used for one compartment and the other bottle for the other compartment?

A
  • No. Only one compartment may be selected (FWD or AFT)
21
Q

What happens when a cargo extinguishing button is pushed if smoke has been detected?

A
  • High-rate bottle discharges immediately
  • Low-rate bottle discharges after one minute if the airplane is in flight
  • If airplane is on the ground (weight-on-wheels) the low-rate bottle will NOT automatically discharge
22
Q

During flight, can the low-rate bottle be discharged before the minute is up?

A
  • Yes, by pushing the extinguishing button again
23
Q

How can the low-rate bottle be discharged if the airplane is on the ground (weight-on-wheels)?

A
  • The extinguishing button must be pushed again
24
Q

Can cargo extinguishing be used if no smoke is detected?

A
  • Yes. The high-rate bottle extinguishing button must be pushed twice, once to arm the bottle and once to discharge the bottle
  • The low-rate bottle automatically discharges after one minute if in flight
25
Q

How are the lavs protected from fire?

A
  • Heat-sensitive extinguishers in the lav waste bins automatically discharge if a predetermined temperature is reached

Mesa E-JET EMB175 Study Guide Questions (14 decks)

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