FAA Airman Certification Standards Code
CH.VI.C — Autorotation with Turns in a Single-Engine Helicopter
Commercial Pilot Helicopter · Area of Operation VI: Performance Maneuvers · Standard: FAA-S-ACS-16
What does ACS code CH.VI.C cover?
ACS Code CH.VI.C covers "Autorotation with Turns in a Single-Engine Helicopter" under Area of Operation VI (Performance Maneuvers) for the FAA Commercial Pilot Helicopter certificate (FAA-S-ACS-16). Candidates are tested on knowledge elements and risk management factors defined in 14 CFR regulations and FAA handbooks (PHAK / AFH).
Task Specification & Required References
- ACS Document: FAA-S-ACS-16 (Commercial Pilot Helicopter)
- Area of Operation: Area VI — Performance Maneuvers
- Task: Task C — Autorotation with Turns in a Single-Engine Helicopter
- Primary FAA Sources: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25), Airplane Flying Handbook (FAA-H-8083-3) / Helicopter Flying Handbook (FAA-H-8083-21), Aviation Weather Handbook (FAA-H-8083-28), 14 CFR Parts 61, 91 & 107, Aeronautical Information Manual (AIM).
Airman Certification Standards Elements
Knowledge Elements
- CH.VI.C.K1: Effects of wind, weight, temperature, and density altitude.
- CH.VI.C.K2: Main rotor (Nr) speed.
- CH.VI.C.K3: Energy management.
- CH.VI.C.K4: Causes and effects of high descent rates.
- CH.VI.C.K5: Effect of varying bank angles, airspeeds, and rotor rpm.
Risk Management Elements
- CH.VI.C.R1: Low entry altitudes.
- CH.VI.C.R2: Flight control inputs.
- CH.VI.C.R3: Turbulence, including wake turbulence.
- CH.VI.C.R4: Windshear.
- CH.VI.C.R5: Energy management.
- CH.VI.C.R6: Main rotor (Nr) speed.
- CH.VI.C.R7: Low rotor rpm or rotor stall.
- CH.VI.C.R8: Excessive rate of descent.
- CH.VI.C.R9: Powerplant failure during the maneuver.
- CH.VI.C.R10: Rolling out of the turn.
- CH.VI.C.R11: Collision hazards.
- CH.VI.C.R12: Terminating an autorotation.
- CH.VI.C.R13: Power recovery and go-around.
- CH.VI.C.R14: Distractions, task prioritization, loss of situational awareness, or disorientation.
How do I study CH.VI.C?
- Read each element for CH.VI.C in FAA-S-ACS-16 and note any you cannot explain in your own words.
- Study each one in the FAA source it points to: the handbook chapter, the 14 CFR section or the AIM paragraph.
- Practice with questions tagged CH.VI.C, and read the explanation for every miss.
- Retest, then review the ACS codes you still miss on your practice test report.
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