ifr navigationFAA-published sample question (IRA, Aug 2021)
When using VOR for navigation, which of the following should be considered as station passage?
A
The first movement of the CDI as the aircraft enters the zone of confusion.
B
The moment the TO FROM indicator becomes blank.
C
The first positive, complete reversal of the TO FROM indicator.✓ Correct Answer
Explanation
The Instrument Flying Handbook (Ch. 9) defines VOR station passage as the first positive, complete reversal of the TO/FROM indicator. Needle movement entering the cone of confusion and a momentarily blank or flagged indicator occur before the station is actually passed, so they are not used.
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