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AA.VII.D.K2FAA-S-ACS-11A · Nov 2023Knowledge

Powerplant restart procedures and conditions where a restart attempt is appropriate.

ACS element text (the applicant demonstrates understanding of)

Powerplant restart procedures and conditions where a restart attempt is appropriate.

Bottom line

If the flameout is due to a transitory condition, such as an imbalance between fuel flow and engine speed, an airstart may be attempted once the condition is corrected. In any case, pilots must follow the applicable emergency procedures outlined in the AFM/ POH.

Key numbers

Key numbers for Powerplant restart procedures and conditions where a restart attempt is appropriate.
NumberWhat it means
no lower than 3,000 feet AGL for propeller unfeathering and restartRestart floor

FAA references

  1. PHAK ch. 7 (p. 7-24) — FAA-H-8083-25C (2023)
  2. AFH ch. 11 (p. 11-13) — FAA-H-8083-3C
  3. AFH ch. 13 (p. 13-36) — FAA-H-8083-3C
  4. RMH ch. 3 (p. 3-2) — FAA-H-8083-2A
  5. PHAK ch. 9 (p. 9-4) — FAA-H-8083-25C (2023)
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