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SESK: Stuff Everyone Should Know · sesk.info/pilot-annual-inspection

Under the usual Part 91 annual-inspection rule, what is the inspection interval?

12 calendar months.

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  1. 24 calendar months
  2. 12 calendar months ✔
  3. 100 hours of flight time

Why: Unless an authorized exception or other inspection program applies, an aircraft must have an annual inspection within the preceding 12 calendar months and be approved for return to service.

Huh, didn't know that: Calendar months mean the inspection is good through the last day of the same month next year.

The dad joke
My airplane gets a checkup every year. I wish it would remind me to get mine.
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References

Answer: 12 calendar months. Unless an authorized exception or other inspection program applies, an aircraft must have an annual inspection within the preceding 12 calendar months and be approved for return to service.

  1. 14 CFR 91.409 Inspections www.ecfr.gov/current/title-14/section-91.409
    no person may operate an aircraft unless, within the preceding 12 calendar months, it has had
    Checked 2026-10-09.

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