AA.I.E.K1FAA-S-ACS-11A · Nov 2023Knowledge
Turbine engines, thrust reversing systems, and system malfunctions.
Turbine engines, thrust reversing systems, and system malfunctions.
Bottom line
Turbine engine malfunctions to understand include start malfunctions, surge, compressor stalls, and roll-back.
Key numbers
| Number | What it means |
|---|---|
| no more than idle thrust when the reversing system malfunctions | Max fwd thrust |
| not in selected position and in reverse thrust position | Reverser indication |
FAA references
- AC 61-138, paras. 14.3.7.1, 14.3.7.2 — AC No: 61-138A
- 14 CFR 25.1305 (Powerplant instruments.) — eCFR current as of 2026-10-08
- 14 CFR 25.933 (Reversing systems.) — eCFR current as of 2026-10-08
- 14 CFR 121.344 (Digital flight data recorders for transport category airplanes.) — eCFR current as of 2026-10-01
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- Common mistakes paired with the FAA facts that correct them