# Commercial Pilot — Rotorcraft ACS Tasks > Browse 51 FAA ACS Tasks from FAA-S-ACS-16, with official objectives, references, and exact K/R/S item descriptions. Canonical HTML: [https://www.check-ride.ai/acs/rotorcraft/commercial-pilot](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot) Site reference: [https://www.check-ride.ai/llms.txt](https://www.check-ride.ai/llms.txt) ## Document context - FAA document: Commercial Pilot for Rotorcraft Category Helicopter Rating Airman Certification Standards - Identifier: FAA-S-ACS-16 - Published source date: November 2023 - Aircraft category: Rotorcraft - Certificate or rating: Commercial Pilot - Task pages: 51 - Exact K/R/S item descriptions: 949 - FAA source library: https://www.faa.gov/training_testing/testing/acs ## Area of Operation I. Preflight Preparation - [CH.I.A — Pilot Qualifications](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-i-a/llms.txt): 8 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with airman and medical certificates including privileges, limitations, currency, and operating as pilot-in-command as a commercial pilot. - [CH.I.B — Airworthiness Requirements](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-i-b/llms.txt): 16 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with airworthiness requirements, including aircraft certificates. - [CH.I.C — Weather Information](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-i-c/llms.txt): 34 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with weather information for a flight under VFR. - [CH.I.D — Cross-Country Flight Planning](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-i-d/llms.txt): 22 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with cross-country flights and VFR flight planning. - [CH.I.E — National Airspace System](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-i-e/llms.txt): 8 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with National Airspace System (NAS) operations under VFR as a commercial pilot. - [CH.I.F — Performance and Limitations](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-i-f/llms.txt): 19 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with operating a helicopter safely within the parameters of its performance capabilities and limitations. - [CH.I.G — Operation of Systems](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-i-g/llms.txt): 18 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with safe operation of systems on the helicopter provided for the flight test. - [CH.I.H — Human Factors](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-i-h/llms.txt): 22 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with personal health, flight physiology, and aeromedical and human factors related to safety of flight. - [CH.I.I — Night Operations](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-i-i/llms.txt): 17 K/R/S items. To determine the applicant exhibits satisfactory knowledge and risk management associated with night operations. ## Area of Operation II. Preflight Procedures - [CH.II.A — Preflight Assessment](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-ii-a/llms.txt): 17 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with preparation for safe flight. - [CH.II.B — Flight Deck Management](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-ii-b/llms.txt): 11 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with flight deck management practices. - [CH.II.C — Powerplant Starting and Rotor Engagement](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-ii-c/llms.txt): 11 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with recommended powerplant starting and rotor engagement procedures. - [CH.II.D — Before Takeoff Check](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-ii-d/llms.txt): 11 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with before takeoff check. ## Area of Operation III. Airport and Heliport Operations - [CH.III.A — Runway/Taxiway/Heliport/Helipad Signs, Markings, and Lighting](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-iii-a/llms.txt): 8 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with runway/taxiway/heliport/helipad signs, markings and lighting. - [CH.III.B — Communications, Light Signals, and Runway Lighting Systems](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-iii-b/llms.txt): 15 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with normal and emergency radio communications, air traffic control (ATC) light signals, and runway lighting systems. - [CH.III.C — Traffic Patterns](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-iii-c/llms.txt): 13 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with traffic patterns. ## Area of Operation IV. Hovering Maneuvers - [CH.IV.A — Vertical Takeoff and Landing](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-iv-a/llms.txt): 16 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with vertical takeoff and landing from a hover. - [CH.IV.B — Hover Taxi](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-iv-b/llms.txt): 31 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with hover taxi operations, including runway incursion avoidance. - [CH.IV.C — Air Taxi](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-iv-c/llms.txt): 23 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with air taxi operations. - [CH.IV.D — Taxiing with Wheel-Type Landing Gear](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-iv-d/llms.txt): 25 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with ground taxi operations, in a wheel-type aircraft, including runway incursion avoidance. - [CH.IV.E — Slope Operations](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-iv-e/llms.txt): 24 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with slope operations. ## Area of Operation V. Takeoffs, Landings, and Go-Arounds - [CH.V.A — Normal Takeoff and Climb](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-v-a/llms.txt): 27 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with normal takeoff, climb operations, and rejected takeoff procedures. - [CH.V.B — Normal and Crosswind Approach](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-v-b/llms.txt): 26 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with a normal and crosswind approach. - [CH.V.C — Maximum Performance Takeoff and Climb](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-v-c/llms.txt): 23 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with maximum performance takeoff and climb. - [CH.V.D — Steep Approach](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-v-d/llms.txt): 30 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with steep approach. - [CH.V.E — Rolling Takeoff (Wheel-Type Landing Gear)](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-v-e/llms.txt): 27 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with rolling takeoff with wheel-type landing gear. - [CH.V.F — Shallow Approach and Running/Roll-On Landing](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-v-f/llms.txt): 23 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with shallow approach and running/roll-on landing operation. - [CH.V.G — Go-Around](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-v-g/llms.txt): 16 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with go-around with emphasis on factors that contribute to landing conditions that may require a go-around. ## Area of Operation VI. Performance Maneuvers - [CH.VI.A — Rapid Deceleration/Quick Stop](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-vi-a/llms.txt): 13 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with rapid deceleration/quick stop and conditions that may require a rapid deceleration/quick stop. - [CH.VI.B — Straight-In Autorotation in a Single-Engine Helicopter](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-vi-b/llms.txt): 31 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with a straight-in autorotation to a power recovery. - [CH.VI.C — Autorotation with Turns in a Single-Engine Helicopter](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-vi-c/llms.txt): 32 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with autorotation with turns. ## Area of Operation VII. Navigation - [CH.VII.A — Pilotage and Dead Reckoning](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-vii-a/llms.txt): 25 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with pilotage and dead reckoning. - [CH.VII.B — Navigation Systems and Radar Services](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-vii-b/llms.txt): 16 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with navigation systems and radar services. - [CH.VII.C — Diversion](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-vii-c/llms.txt): 13 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with diversion. - [CH.VII.D — Lost Procedures](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-vii-d/llms.txt): 12 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with lost procedures and can take appropriate steps to achieve a satisfactory outcome if lost. ## Area of Operation VIII. Emergency Operations - [CH.VIII.A — Powerplant Failure in a Hover in a Single-Engine Helicopter](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-viii-a/llms.txt): 20 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with powerplant failure in-ground effect (IGE) hover - [CH.VIII.B — Powerplant Failure at Altitude in a Single-Engine Helicopter](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-viii-b/llms.txt): 24 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with a simulated powerplant failure at altitude. - [CH.VIII.C — Approach and Landing with One Engine Inoperative (OEI) (Simulated) (Multiengine Helicopter Only)](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-viii-c/llms.txt): 15 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with approach and landing with one engine inoperative (simulated). - [CH.VIII.D — Systems and Equipment Malfunctions](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-viii-d/llms.txt): 18 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with causes, indications, and pilot actions for system malfunctions. - [CH.VIII.E — Vortex Ring State (VRS)](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-viii-e/llms.txt): 18 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with main rotor Vortex Ring State (VRS). - [CH.VIII.F — Low Rotor Revolutions Per Minute (RPM) Recognition and Recovery](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-viii-f/llms.txt): 15 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with low rotor rpm recognition and recovery. - [CH.VIII.G — Antitorque System Failure](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-viii-g/llms.txt): 9 K/R/S items. To determine the applicant exhibits satisfactory knowledge and risk management associated with an antitorque system failure. - [CH.VIII.H — Dynamic Rollover](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-viii-h/llms.txt): 11 K/R/S items. To determine the applicant exhibits satisfactory knowledge and risk management associated with dynamic rollover. - [CH.VIII.I — Ground Resonance](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-viii-i/llms.txt): 10 K/R/S items. To determine the applicant exhibits satisfactory knowledge and risk management associated with ground resonance. - [CH.VIII.J — Low Gravity (G) Recognition and Recovery](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-viii-j/llms.txt): 10 K/R/S items. To determine the applicant exhibits satisfactory knowledge and risk management associated with low G conditions. - [CH.VIII.K — Emergency Equipment and Survival Gear](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-viii-k/llms.txt): 9 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with emergency equipment, and survival gear appropriate to the helicopter and environment encountered during flight. - [CH.VIII.L — Flight Solely by Reference to Instruments](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-viii-l/llms.txt): 11 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with flying solely by reference to instruments. - [CH.VIII.M — Recovery from Unusual Flight Attitudes](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-viii-m/llms.txt): 14 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with attitude instrument flying while recovering from unusual attitudes solely by reference to instruments. ## Area of Operation IX. Special Operations - [CH.IX.A — Confined Area Operations](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-ix-a/llms.txt): 35 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with confined area operations. - [CH.IX.B — Pinnacle Operations](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-ix-b/llms.txt): 36 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with pinnacle operations. ## Area of Operation X. Postflight Procedures - [CH.X.A — After Landing, Parking, and Securing](https://www.check-ride.ai/acs/rotorcraft/commercial-pilot/ch-x-a/llms.txt): 11 K/R/S items. To determine the applicant exhibits satisfactory knowledge, risk management, and skills associated with after landing, parking, and securing procedures. Verify amendments and current applicability in the official FAA source library.