Fires

Question 1

1) MGB FIRE warning light illuminated
Additional possible symptoms:
2) Illumination of MGB related warning and caution lights
3) Loss of MGB oil pressure and/or rise in temperature
4) Drop in fuel or hydraulic pressure
5) Electrical system malfunctions

(Warning: due to the potential for fire damage to the flight control servos and/or the associated hydraulic lines, a fire in this compartment may result in complete loss of aircraft control)

Answer 1

Main Gearbox Fire (pg 15)

1) Attempt to confirm presence of fire (alert crew)
2) Landing/Hover checklist - complete (minimum 200 foot checks based on urgency)
If fire confirmed:
3) Land/Ditch immediately
If not confirmed:
4) Land as soon as possible

Question 2

1) FIRE warning light illuminated on the instrument panel
2) Red warning light illuminated on the corresponding EFSL
3) Flames and/or smoke coming from engine compartment

Answer 2

Engine Compartment Fire in Flight (pg 16-17)

1) Attempt to confirm presence of fire (alert crew)
2) Single engine flight profile - establish
If fire confirmed:
3) FADEC control switch (affected engine) - confirm, idle, confirm, off
4) EFSL - confirm, off
5) Boost pumps (affected engine) - off
6) PRI FIRE extinguisher button (affected engine) - confirm, push
7) SEC FIRE extinguisher button (affected engine) - push
8) Landing/Hover checklist - complete (minimum 200 ft checks based on urgency)
If fire persists:
9) Land/Ditch immediately
If fire no longer evident:
9) Land as soon as possible
If fire not confirmed:
3) Land as soon as practical

Question 3

1) FIRE warning light illuminated
2) Possible hand or voice signals from ground crew
3) Red warning light illuminated on the corresponding EFSL

Answer 3

Engine Compartment Fire on Deck (pg 18)

1) Attempt to confirm presence of fire (alert crew)
2) FADEC control switches - both off
3) EFSLs - both off
4) Boost pumps - all off
If fire confirmed:
5) PRI FIRE extinguisher button (affected engine) - confirm, push
6) SEC FIRE extinguisher button (affected engine) - push
7) EECO - off
8) Rotor brake - on
9) Evacuate aircraft

Question 4

Internal Fire
(Caution: a popped circuit breaker should be reset only once.  Repeated resetting or holding in may result in an electrical fire)

Answer 4

Internal Fire (Cabin, Electrical, and/or Avionics) (pg 19-20)

1) Designate crewmember to fight fire
2) Affected equipment - off
3) Heat/cool switches - off
4) Ram air - closed
5) Cabin sliding door - closed
6) Pilot windows - closed
7) Rack Blower CB - pull (for avionics rack fire only - avionics rack panel R5#4)
8) Circuit breakers - pull (for affected circuits)
9) Landing/Hover checklist - complete (200 ft checks at a minimum based on urgency)
(Warning: the severity of the fire and actual flight conditions (night/instrument) will dictate the immediate procedures to be followed. It may not be advisable to secure all electrical power, thus losing AFCS and flight instruments, prior to achieving VMC.
With the EECO switch in the OFF position, the flotation system will not be available. Consideration should be given to activating floats prior to securing if ditching is anticipated.)
(Note: an avionics fire will be fought by disconnecting enough camlocks on the avionics rack panel to allow access for the fire extinguisher nozzle. Short blasts are advised to preserve extinguisher agent in case of reflash. Close rack panel and monitor for reflash.
All communication, both internal and external, and all aircraft system lighting will be lost after activating EECO switch.
Placing the EECO switch to OFF removes power to the tail rotor hydraulic isolation valve, closing the valve. With the 10-bladed tail rotor hub installed, this action results in considerable feedback in the pedals.)
If electrical or avionics fire persists:
10) EECO - off
If electrical or avionics fire persists:
11) Land/Ditch immediately
If fire goes out:
11) Land as soon as possible

Question 5

Smoke and Fume Elimination

Answer 5

Smoke and Fume Elimination (pg 21-22)

1) Heat/col switches - off
2) Ram air - open
3) Cabin sliding door - open
4) Pilot windows - open
5) Land as soon as practicable
(Warning: if fuel fumes are present, limit radio transmissions to a minimum. Due to antenna location, COMM1 is the best choice)
(Caution: to avoid the possibility of rotor blade or structural damage, do not jettison any window or door unless deemed absolutely essential for smoke or fume removal)
(Note: The SEAS bottles on the crew survival vest may be a good source of clean air in the event of an unbreathable environment.)

Question 6

1) TOT rises rapidly or does not decrease within 10 seconds after the FADEC control switch has been placed in the OFF position.

(Note: after engine shutdown is complete and N1 rotation has ceased, TOT may increase slowly due to temperature soak back)
(Caution: if the engine does not stop immediately (solenoid valve failure), the FADEC will shut down the engine 5 to 6 seconds later. Do not move the EFSL to the shutdown position before 10 seconds have elapsed)

Answer 6

Engine Post Shutdown Fire (pg 23-24)

1) FADEC control switch - check off
2) Boost pumps - check off
If high TOT still evident after 10 seconds:
3) EFSL - shut off
(Caution: operation of the crank button with the EFSL pulled will cause severe damage to the engine fuel pump)
4) Crank button - depress until TOT decreases
If TOT continues to rise or does not decrease:
5) EECO - off
6) Rotor brake - on
7) Evacuate aircraft

Question 7

1) Fire detector FAIL light illuminated

Answer 7

Fire Detector Failure (pg 24)

1) Land as soon as practicable

Question 8

1) L or R EXT caution light illuminated

Answer 8

Fire Suppression Failure (pg 25)

1) Abort Mission