Mayday Assist

Arriving in 1.9.6

One tap when the engine goes quiet.

Mayday Assist, arriving in Ascent 1.9.6, is a screen you open with one tap. It lists nearby airports within 150 NM with their frequencies, shows glide reach from wind, the POH glide numbers you enter for your aircraft and terrain where terrain data covers the route, sets Direct-To in one tap and opens your aircraft's emergency checklist. Guard 121.500 and squawk 7700 are on cards you tap to copy, then you tune the radio and set the transponder yourself. Mayday Assist never transmits and never contacts anyone.

7700

Squawk, copied for you to set

121.500

Guard, copied for you to tune

150 NM

Airports searched, with frequencies

What it does

Nearest airports

Airports within 150 NM, with frequencies where known. An on-device list keeps working with no signal.

Glide reach

Computed from wind, the POH glide numbers you enter, and terrain where terrain data covers the route.

Direct-To in one tap

Pick a field and the map is navigating to it.

Your emergency checklist

The checklist for the aircraft you are flying, on the same screen.

7700 and 121.5, ready to copy

Tap to copy, then tune and call by hand. You stay in command of the radios.

Share position

Opens the iOS share sheet with your position. The text states that it was not sent to ATC or any emergency service.

What it does not do

Know the limits before you rely on it.

  • Mayday Assist cannot transmit. It does not contact ATC, emergency services or anyone else.
  • It is advisory. Fly the airplane, follow your POH or AFM and follow ATC instructions.
  • Spoken callouts are optional and off by default.

Questions

Does Ascent Mayday Assist call ATC?
No. Mayday Assist never transmits. It puts 121.500 and 7700 on cards you tap to copy, and you tune the radio and set the transponder by hand.
Does it work offline?
Yes. Nearby airports come from an on-device list when there is no connection.
How is glide reach calculated?
From wind, the POH glide numbers you enter for your aircraft, and terrain where terrain data covers the route. It is an advisory estimate.

Fly it first.

Every new account gets a one-time 30-day Pro trial. Then $59.99 the first year and $89.99 a year after. One plan, iPhone and iPad, iOS 18.0 or later.

Get Ascent on the App Store