DEN08LA071 · Hiller UH-12E
Hiller UH-12E · Accident: loss of control in flight while maneuvering
From La Porte Municipal Airport (T41) to La Porte Municipal Airport (T41)
Event
- NTSB case
- DEN08LA071
- 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
Hiller UH-12E
- Aircraft type
- Hiller UH-12
- 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
- N40289
- Operator
- Paul Legris
- Onboard fatalities
- Unknown
- Route
- From La Porte Municipal Airport (T41), La Porte, TXTo La Porte Municipal Airport (T41), La Porte, 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 · hover
- 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 control in flight
- 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
- Environmental issues › Conditions/weather/phenomena
- Personnel issues › Action/decision
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 was test flying the helicopter after maintenance. He did two "quick stop" maneuvers into the wind. After completing the quick stop maneuver, and while in a 5-foot hover, he initiated a slow pedal turn to the left to return to the hangar. As he began the turn, he noticed "a loss of control effectiveness" and he attempted to set the helicopter down. Before he could regain control, the helicopter "slammed" into the ground. The pilot said it had begun to rain, and after he exited the helicopter, he noticed the wind sock had shifted 180 degrees. The tail boom was severed and the main rotor blades were destroyed.
Probable cause
The loss of tail rotor effectiveness. Contributing factors were the sudden windshift to a tailwind, and the pilot initiating a hovering turn in ground effect.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record DEN08LA071
- Event ID
- 20080415X00482
- Case number
- DEN08LA071
- 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, cause areas. 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: 767f152bf7dbe3a5da36eecad6c87f08e6f98c004d6e2111edecb0db1a67ec44; retrieved 2026-09-15T09:32:13.009Z.