Airbus A220 – Fire and Overheat Protection - SmartCockpit - Airline training guides, Aviation, Operations, Safety

Fire suppression in the cargo compartments is supplied by:

A High Rate Discharge (HRD) fire-extinguishing bottle when the aircraft altitude is more than 25 000 ft and a Low Rate Discharge (LRD) fire-extinguishing bottle when the aircraft altitude is less than 25 000 ft.

A Low Rate Discharge (LRD) fire-extinguishing bottle to permit extended operations ETOPS-configured aircraft to provide a longer period of fire suppression.

A High Rate Discharge (HRD) fire-extinguishing bottle and a Low Rate Discharge (LRD) fire-extinguishing bottle.

Correct! Wrong!

Engine fire extinguishing - There are two engine fire-extinguishing bottles in _____. Both bottles can be used for either engine.

In the left and right part of the main landing gear bay.

The wing-to-body fairing between the two wheel wells.

The lower part of the front cargo area.

Correct! Wrong!

The central component of the Fire Detection Extinguishing (FIDEX) system is a dual-channel control unit Channel A is powered by the:

BATT DIR BUS 1 and channel B is powered by the DC ESS 2 bus.

BATT DIR BUS 1 and channel B is powered by the BATT DIR BUS 2.

DC ESS 1 bus and channel B is powered by the DC ESS 2 bus.

Correct! Wrong!

The lavatory is equipped with a floor-mounted smoke detector monitored by the Fire Detection Extinguishing (FIDEX) system control unit, and a waste bin fire extinguisher.

False.

True.

Correct! Wrong!

The lavatory is equipped with a ceiling-mounted smoke detector monitored by the FIDEX control unit, and a waste bin fire extinguisher.

The engine fire protection system includes:

Dual fire detection loops, EICAS and aural alerting, smoke detectors, and two fire-extinguishing bottles.

Dual fire detection loops, EICAS and aural alerting, and two fire-extinguishing bottles.

A fire detection loop, EICAS and aural alerting, and two fire-extinguishing bottles.

Correct! Wrong!

If an APU fire is detected during ground operations, the Fire Detection Extinguishing (FIDEX) system control unit immediately shuts down the APU, the external APU horn sounds, and _____ later the APU fire-extinguishing bottle discharges automatically.

20 seconds.

15 seconds.

10 seconds.

Correct! Wrong!

A minimum of two smoke detectors in the related cargo compartment must detect smoke before there is a fire alarm.

False.

True.

Correct! Wrong!

The lavatory fire-extinguisher system is used to extinguish a fire or source of heat in the lavatory waste bin. The bottle is installed under the sink area with the discharge tubes pointing into the waste bin. The extinguisher discharges when the nozzles reach a temperature of:

90 deg.C (194 deg.F).

100 deg.C (212 deg.F).

76.5 deg.C (170 deg.F).

Correct! Wrong!

The Auxiliary Power Unit (APU) fire protection system has two fire extinguishing bottles.

False.

True.

Correct! Wrong!

The Auxiliary Power Unit (APU) fire protection system includes dual fire detection loops, EICAS and aural alerting, and one APU fire-extinguishing bottle.

The main landing gear fire detection system has:

Dual overheat detection loops mounted inside the top of each main landing gear wheel well.

A single overheat detection mounted in the wing-to-body fairing between the two wheel wells.

A single overheat detection mounted in the landing gear wheel well.

Correct! Wrong!

The engine Fire Detection Extinguishing (FIDEX) system has dual fire detection loops, which are temperature-sensitive elements installed:

In the engine nacelle.

At the end of engine turbine.

In the engine nacelle and pylon.

Correct! Wrong!

Engine Fire Protection - The green AVAIL lights on the BTL1 and BTL2 switches come on when the associated L ENG FIRE or R ENG FIRE switch is pressed. This indicates that the fire-extinguishing bottles are available.

True.

False.

Correct! Wrong!

This indicates that the fire-extinguishing bottles are 'armed' (not available).

Engine Fire Protection - When the AVAIL (Available) light is on and the BTL switch is pressed, halon gas is discharged into the engine compartment. While the halon bottle discharges, the AVAIL light goes off and the amber light on the BTL switch comes on. The amber light bar also comes on when:

A squib failure is detected, or an engine extinguishing system failure is detected.

The bottle pressure is abnormally low, or a squib failure is detected.

The bottle pressure is low.

Correct! Wrong!

There are two smoke detectors installed side by side in the mix manifold bay. They detect smoke that could enter the cabin from the equipment bays.

True.

False.

Correct! Wrong!

When a main landing gear overheat is detected:

The master WARNING lights on the glareshield panel come on, and the MLG BAY OVHT message is displayed on the Synoptic and EICAS pages.

The master WARNING lights on the glareshield panel come on, the ‘GEAR BAY OVERHEAT’ aural message sounds, and the MLG BAY OVHT warning message is displayed on the EICAS page.

The master WARNING lights on the glareshield panel come on, and the MLG BAY OVHT warning message is displayed on the EICAS page.

Correct! Wrong!

Cargo compartment smoke detection - There are _____ Class C smoke detectors in each of the cargo compartments, forward and aft.

Five.

Three.

Four.

Correct! Wrong!

The fire extinguishers are powered by BATT DIR BUS 1 and BATT DIR BUS 2.

True.

False.

Correct! Wrong!

Cargo compartment fire protection - When pressed, either guarded FIRE switch sends a signal to:

Automatically shut off the associated cargo compartment ventilation, shut-off valves and air conditioning RECIRC fans, and activates the applicable squibs on the cargo compartment fire-extinguishing bottles.

Automatically shut off the associated cargo compartment ventilation, shut-off air conditioning RECIRC fans and packs, and also activates the applicable squibs on the cargo compartment fire-extinguishing bottles.

Automatically shut off the shut-off valves and air conditioning RECIRC fans, and activates the applicable squibs on the cargo compartment fire-extinguishing bottles.

Correct! Wrong!

Airbus A220 – Fire and Overheat Protection