AhaBulbStuff Everyone Should Know
AhaBulb: Stuff Everyone Should Know · ahabulb.com/pilot-vor-ident-maintenance

How can a pilot tell a VOR is out of service for maintenance?

Start playing free

  1. Its Morse code identifier is removed
  2. It broadcasts a siren tone
  3. It switches to a different frequency

🔒 The answer is for AhaBulb members. Members see the answer, why it's right and the official sources for every card of Stuff Every Private Pilot Should Know, plus timed practice exams.

The first 50 cards of every test are free to play.

Play the free cards See membership

Like this card?
Play the game

References

  1. Pilot's Handbook of Aeronautical Knowledge FAA-H-8083-25C, Chapter 16 Navigation www.faa.gov/sites/faa.gov/files/18_phak_ch16.pdf 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

FlyingVOR radials are referenced to which north?FlyingWhy might a VOR receiver show an OFF flag when you are flying low and far from the station?FlyingUsing a VOR test facility (VOT) with the needle centered, what should the OBS read with a FROM flag?

That's stuff everyone should know.