SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/pilot-elt-test-first-5-minutes

When may an analog 121.5 MHz ELT be tested on the airplane?

During the first 5 minutes after any hour, no more than three sweeps.

Start playing free

  1. Any time, as long as it is short
  2. During the first 5 minutes after any hour ✔
  3. Only between midnight and 6 a.m.

Why: The AIM says analog ELT tests should happen only in the first 5 minutes after the hour, and last no more than three audible sweeps. Tests outside that time should be coordinated with the nearest FAA tower.

Huh, didn't know that: Digital 406 MHz ELTs should be tested only following the unit maker's instructions.

The dad joke
I test my ELT at five past the hour. It's the only thing in my life that's on time.
Like this card?
Play the game

References

Answer: During the first 5 minutes after any hour. The AIM says analog ELT tests should happen only in the first 5 minutes after the hour, and last no more than three audible sweeps. Tests outside that time should be coordinated with the nearest FAA tower.

  1. AIM 6-2-4, Emergency Locator Transmitter www.faa.gov/air_traffic/publications/atpubs/aim_html/chap6_section_2.html
    Analog 121.5/243 MHz ELTs should only be tested during the first 5 minutes after any hour.
    Checked 2026-10-09.

Think this answer is wrong? Tap "Challenge this answer" on the card in the game and tell us why.

Test yourself in the game

Flying & DronesApproaching Class C, the controller replies with your call sign and 'standby.' May you enter?Flying & DronesInbound to a nontowered airport, from how far out should you monitor and talk on the CTAF?Flying & DronesUnless ATC says otherwise, which transponder code does a VFR pilot use?

That's stuff everyone should know.