How is a cabin altitude warning or loss of pressurization handled on an ATR?

• A. Don oxygen, initiate rapid descent to a safe altitude, follow emergency procedures and checks
• B. Continue normal operations and ignore
• C. Increase climb rate
• D. Reduce air conditioning

Answer: (A)

When cabin altitude warning or loss of pressurization occurs, the priority is to get oxygen to everyone and bring the aircraft down to a breathable altitude as quickly as possible. Donning oxygen masks immediately prevents hypoxia, then you initiate a rapid descent to a safe altitude so that cabin pressure can be restored and the occupants can breathe normally. After starting the descent, you follow the emergency procedures and checks to manage the situation and verify systems. Increasing the climb or ignoring the issue would worsen or ignore the danger, and reducing air conditioning doesn’t solve the loss of pressurization or oxygen deficiency.