CA.II.C.K3FAA-S-ACS-7B · Nov 2023Knowledge

Engine limitations as they relate to starting.

ACS element text (the applicant demonstrates understanding of)

Engine limitations as they relate to starting.

Bottom line

When the EGT exceeds the safe limit of an aircraft, it experiences a “hot start.” This is caused by too much fuel entering the combustion chamber or insufficient turbine rpm. If the engine fails to accelerate to the proper speed after ignition or does not accelerate to idle rpm, a hung or false start has occurred. Any time an engine has a hot start, refer to the AFM/POH or an appropriate maintenance manual for inspection requirements.

FAA references

  1. PHAK ch. 7 (p. 7-23) — FAA-H-8083-25C (2023)
  2. PHAK ch. 7 (p. 7-20) — FAA-H-8083-25C (2023)
  3. AFH ch. 11 (p. 11-8) — FAA-H-8083-3C
  4. AFH ch. 1 (p. 1-15) — FAA-H-8083-3C
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