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PA.I.B.K3aFAA-S-ACS-6C · Nov 2023Knowledge

a. Flying with inoperative equipment

ACS element text (the applicant demonstrates understanding of)

Equipment requirements for day and night VFR flight, including: a. Flying with inoperative equipment

Bottom line

A failed instrument does not have a universal “go” or “no-go” answer. Establish the aircraft’s applicable MEL or non-MEL path, the intended operation, whether the item is required and whether the failure creates a hazard.

FAA references

  1. 14 CFR 91.213(d)(1) — Current eCFR checked 2026-11-05
  2. 14 CFR 91.213(d)(2) — Current eCFR checked 2026-11-05
  3. 14 CFR 91.213(d)(3), (4) — Current eCFR checked 2026-11-05
  4. 14 CFR 91.213(a) — Current eCFR checked 2026-11-05
  5. 14 CFR 91.213(b) — Current eCFR checked 2026-11-05
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  • Full teaching sections: Without an approved MEL; With an approved MEL; A failed item before a day flight
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