What is a slow decompression?
A slow decompression is a gradual loss of cabin pressure resulting from a failure of the mechanisms responsible for maintaining the appropriate pressure (door seals, pressurization systems, etc).
What is a rapid decompression?
A rapid decompression is a rapid loss of cabin pressure which occurs when the integrity of the cabin has been breached by structural failure of the fuselage, failure of compressors or by an explosion.
What are the physical signs of a rapid decompression?
- High noise levels caused by the air rushing out of the cabin.
- Dense fogging of the atmosphere due to condensation of water vapor and sharp drop of temperature. Dust from the floor, seats and ceiling fill the air.
- If an opening occurs in the fuselage of a pressurized cabin, there will be a movement of air being rushed through the opening.
- Loose objects will be blown out of the aircraft and may hit and injure passengers while flying to the opening.
After a decompression, how will we know when it’s safe to circulate?
The Flight Deck Crew gives permission to circulate in the cabin by making the following announcement: “Flight Attendants you may now circulate. Flight Director to the interphone. Agents de bord vous pouvez maintenant circuler. Directeur de vol à l’interphone.”
What is the procedure for a portable electronic device fire?
- Get Halon fire extinguisher and discharge onto the device.
- Wet soak device with water.
- Place cooled off device in a plastic bag and monitor until arrival.
What is the procedure for a waste bin fire?
- Get Halon fire extinguisher.
- Open lid carefully and discharge fire extinguisher.
- Open carefully in order not to feed too much oxygen to the fire.
- Investigate origin of fire.
- Wet soak contents of trash bin with water.
- Monitor area for reflash.
What is the procedure for a tidal flat evacuation?
Tidal flats are an area of sand, mud and quicksand, periodically covered with varying depths of water. Some airports are located near tidal flats. If the aircraft lands in a tidal flat area and there is no immediate threat to life:
- Prepare for a ditching.
- Remain on board.
- Follow the Pilot-in-Command’s instructions.
What is the brace position for a forward facing jumpseat?
- Seatbelts fastened and adjusted on hips, shoulder harness well adjusted
- Sitting back in the seat
- Feet flat on the floor, slightly forward of the seat
- Head forward, chin against chest
- Hands grasp the edges of the jumpseat or are positioned on the lap.
What is the brace position for an aft facing jumpseat?
- Seatbelts and shoulder harness fastened and adjusted.
- Sitting back in the seat
- Feet flat on the floor, slightly forward of the seat
- Head pressed against headrest
- Hands grasp the edges of the jumpseat or are positioned on the lap.
What is a rapid deplaning?
Not all emergencies involve an evacuation. If the situation is dangerous, such as a bomb threat, but with no imminent danger the PIC may opt to have pax deplane rapidly. A rapid deplaning of the A/C is by conventional means such as stairs or bridges. This does not involve evacuation slides.
