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PA.II.A.K2FAA-S-ACS-6C · Nov 2023Knowledge

Determining that the airplane to be used is appropriate and airworthy.

ACS element text (the applicant demonstrates understanding of)

Determining that the airplane to be used is appropriate and airworthy.

Bottom line

The term "airworthy" means that the aircraft conforms to its type design and is in condition for safe operation. No person may operate a civil aircraft unless it is in an airworthy condition.

Key numbers

Key numbers for Determining that the airplane to be used is appropriate and airworthy.
NumberWhat it means
within the preceding 12 calendar monthsAnnual insp.
if the aircraft is operated for hire100-hour insp.
within the preceding 24 calendar monthsTransponder
30-day, when using VOR for IFR flightVOR check
within the last 12 monthsELT insp.

FAA references

  1. AFH ch. 2 (pp. 2-1–2-4) — FAA-H-8083-3C
  2. PHAK ch. 9 (p. 9-9) — FAA-H-8083-25C (2023)
  3. PHAK ch. 1 (p. 1-23) — FAA-H-8083-25C (2023)
  4. RMH ch. 1 (p. 1-2) — FAA-H-8083-2A
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