CEN09CA394 · Sidler Mike ROTORWAY 162 F
Sidler Mike ROTORWAY 162 F · Accident: loss of tail rotor effectiveness during autorotation
From Mid-Way Regional Airport (KJWY) to Mid-Way Regional Airport (KJWY)
Event
- NTSB case
- CEN09CA394
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 0 · all aircraft and ground
- Ground fatalities
- Unknown
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Sidler Mike ROTORWAY 162 F
- Aircraft type
- Sidler Mike ROTORWAY
- Category
- Helicopter
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N1934
- Operator
- Sidler Mike
- Onboard fatalities
- Unknown
- Route
- From Mid-Way Regional Airport (KJWY), Waxahachie, TXTo Mid-Way Regional Airport (KJWY), Waxahachie, TX
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Autorotation
- Defining eventThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Loss of tail rotor effectiveness
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Aircraft › Aircraft oper/perf/capability
- Aircraft › Aircraft propeller/rotor
- Personnel issues › Action/decision
- Personnel issues › Task performance
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The private pilot was conducting a practice 180-degree power recovery autorotation in a helicopter with a clockwise rotating main rotor with a right crosswind of three knots. The pilot said he had a higher than expected rate of descent as he was flaring at zero airspeed and attempting a power recovery to terminate at a skid height of approximately 15 feet above ground level. Suddenly, and without warning the pilot lost directional control, the helicopter began to spin nose left, and his application of full right pedal had no effect. The pilot said he tried to keep the helicopter level while it was spinning, but it eventually impacted on the left side of the taxiway. The helicopter was substantially damaged when the left skid gear partially collapsed and the airframe and tail boom buckled. During the impact sequence the main rotor blades struck the tail boom and the main rotor blades and tail rotor blades struck the ground. An on-scene investigation by an FAA maintenance inspector confirmed flight control continuity and confirmed no apparent damage to the tail rotor drive belts. There was no post-crash fire and the pilot received minor injuries.
Probable cause
The pilot’s failure to control his rate of descent during autorotation, which required an aggressive recovery maneuver and resulted in a sudden loss of tail rotor effectiveness.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CEN09CA394
- Event ID
- 20090629X05509
- Case number
- CEN09CA394
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: e0aece8ff35c79a748b99f658d0e5fddb8649a3530818208a8c42ce175d84120; retrieved 2026-09-15T11:38:00.856Z.