A220- Fire

Question 1

What are the indications of an engine fire?

Answer 1

1. The red WARNING legends of the Master WARNING/CAUTION switchlights (2) illuminate
   on the glareshield.
2. “LEFT ENGINE FIRE” or “RIGHT ENGINE FIRE” aural warning sounds.
3. FIRE displays above the N1 gauge.
4. L ENG FIRE or R ENG FIRE warning message displays on the EICAS.
5. L ENG FIRE or R ENG FIRE guarded switchlight illuminates.
6. L FIRE or R FIRE light on the ENGINE panel illuminates

Question 2

What are the indications of an APU fire?

Answer 2

1. The red WARNING legends of the Master WARNING/CAUTION switchlights (2) illuminate
   on the glareshield.
2. “APU FIRE” aural message sounds.
3. APU FIRE guarded switchlight illuminates.
4. APU external warning horn sounds (aircraft on the ground).
5. APU FIRE warning message displays on the EICAS

Question 3

What does pressing the guarded L ENG FIRE or R ENG FIRE switchlight initiate?

Answer 3

1. Both engine fire extinguisher bottles arm for discharge and illuminate the
   BTL 1 / BTL 2 AVAIL lights.
2. Engine fuel shutoff valves close.
3. Fan air valve closes.
4. Engine bleed air shutoff valve closes.
5. Hydraulic shutoff valve closes.
6. Variable Frequency Generator (VFG) deactivates

Question 4

What does pressing the guarded APU FIRE switchlight initiate?

Answer 4

1. APU fire extinguishing bottle arms for discharge and illuminates the BTL
AVAIL light.
2. APU fuel shutoff valve closes.
3. APU bleed air valve closes.
4. VFG deactivates.

Question 5

What are the indications of a cargo fire?

Answer 5

1. The red WARNING legends of the Master WARNING/CAUTION switchlights (2) illuminate
   on the glareshield.
2. “CARGO FIRE” aural warning sounds.
3. AFT CARGO FIRE or FWD CARGO FIRE warning message displays on the EICAS.
4. FWD or AFT FIRE guarded switchlight illuminates on the CARGO fire panel

Question 6

What happens when the FWD or AFT guarded switchlight is pressed?

Answer 6

1. Cargo compartment fire extinguisher bottles arm and the AVAIL light in
   the BTL switchlight illuminates.
2. Cargo ventilation shutoff valves close.
3. Air conditioning recirculation fans shut off.

Question 7

What are the indications of smoke detected in the equipment bay?

Answer 7

1. The red WARNING legends of the Master WARNING/CAUTION switchlights (2) illuminate.
2. “SMOKE” aural message sounds.
3. EQUIP BAY SMOKE warning message displays on the EICAS