Report an emergency descent
Mayday, Mayday, Mayday. Loss of pressurisation. Emergency descent in progress.
Roger Mayday. Emergency descent acknowledged.
We are descending to a safe level.
Key English
Mayday, Mayday, Mayday. Rapid decompression. We are descending immediately.
Roger Mayday. I am clearing conflicting traffic.
We will advise when level.
Key English
We have a cabin pressure problem and are making an emergency descent.
Roger. Emergency descent acknowledged.
We are unable to maintain the assigned level.
Key English
Keep communication short during descent
We are wearing oxygen masks. Transmissions may be difficult to understand.
Roger. Say again essential information as necessary.
Wilco. We will keep our calls brief.
Key English
Stand by. We are unable to provide further details during descent.
Roger. Call when able.
Wilco. Emergency descent continuing.
Key English
We are descending and the aircraft remains under control.
Roger. Advise your level when able.
Wilco. We will report when levelled off.
Key English
Report level-off and intentions
We have levelled off. We intend to divert to Westhaven.
Roger. State any further assistance required.
We request weather information for Westhaven.
Key English
The emergency descent is complete. We need time to assess the situation.
Roger. Advise when you have decided your intentions.
Wilco. We will update you shortly.
Key English
We are now level and request medical assistance on arrival.
Roger. I will relay your request to the destination aerodrome.
We will advise the number of persons affected when able.
Key English
Sources & learning scope
Authored excerpts based on historical training considerations do not prescribe descent altitude, terrain clearance or manoeuvres. Protect traffic immediately and follow current unit and aircraft procedures.
Microphone audio is sent to Alibaba Cloud for scoring. ATCBase does not save recordings.