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IR.II.C.R1FAA-S-ACS-8C · Nov 2023Risk management

Operating with inoperative equipment.

ACS element text (the applicant demonstrates understanding of)

Operating with inoperative equipment.

Bottom line

Pilots have attempted instrument takeoff with inoperative airspeed indicators (pitot tube obstructed), controls locked, and numerous other oversights due to haste or carelessness. When inoperative equipment is found during a preflight inspection or prior to departure, the decision should be to cancel the flight, obtain maintenance prior to flight, or to defer the item or equipment. A pilot should consider the effect of inoperative equipment in relation to expected flight conditions.

FAA references

  1. RMH ch. 3 (p. 3-7) — FAA-H-8083-2A
  2. IFH ch. 7 (p. 7-61) — FAA-H-8083-15B
  3. PHAK ch. 9 (p. 9-9) — FAA-H-8083-25C (2023)
  4. 14 CFR 91.213 (Inoperative instruments and equipment.) — eCFR current as of 2026-03-05
  5. PHAK ch. 9 (p. 9-10) — FAA-H-8083-25C (2023)
  6. PHAK ch. 2 (p. 2-23) — FAA-H-8083-25C (2023)
  7. RMH ch. 1 (p. 1-2) — FAA-H-8083-2A
  8. IFH ch. 11 (p. 11-8) — FAA-H-8083-15B
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