A VOR equipment operational check must have been accomplished and found to be within the limits of permissible bearing error prior to use under IFR within the preceding
A
60 days.
B
24-calendar months.
C
30 days.✓ Correct Answer
Explanation
14 CFR 91.171(a) requires the VOR equipment used under IFR to have been operationally checked within the preceding 30 days and found within permissible limits. 24 calendar months is the transponder and altimeter/static test interval.
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