CEN09LA113 · Cotton Galen M HELICYCLE
Cotton Galen M HELICYCLE · Accident: loss of engine power (total) while maneuvering
From David Wayne Hooks Memorial Airport (DWH) to EYQ · Weiser Airpark, TX
Event
- NTSB case
- CEN09LA113
- 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
Cotton Galen M HELICYCLE
- Aircraft type
- Cotton Galen HELICYCLE
- 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
- N555CX
- Operator
- Cotton Galen M
- Onboard fatalities
- Unknown
- Route
- From David Wayne Hooks Memorial Airport (DWH), Houston, TXTo EYQ · Weiser Airpark, 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
- Maneuvering
- 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 engine power (total)
- 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 power plant
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The pilot departed in his single-engine experimental helicopter in calm wind conditions with a hover transition approximately six feet above the ground when the helicopter yawed to the left and the engine surged. He immediately began to maneuver back toward level ground but the engine stopped producing power and continued to yaw to the left. The pilot was unable to maintain altitude and directional control and subsequently contacted the ground with the nose of the helicopter pointed approximately 35 degrees to the left of the direction of flight. The right skid collapsed upon impact and the helicopter rolled over onto its right side. The reason for the loss of engine power could not be determined.
Probable cause
The loss of engine power during a hover landing which resulted in a hard landing.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CEN09LA113
- Event ID
- 20090102X40252
- Case number
- CEN09LA113
- 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, coordinates. 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: 4af00101692c12b2ca92b0e191228a4006ca02601e0eab81ce8fb80219579c71; retrieved 2026-09-15T10:39:33.088Z.