LAX03LA253 · Bell 206B
Bell 206B · Accident: abrupt maneuver during landing
From Modesto City Co-Harry Sham Field (MOD) to Merced, CA
Event
- NTSB case
- LAX03LA253
- 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
Bell 206B
- Aircraft type
- Bell 206
- 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
- N9254Y
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Modesto City Co-Harry Sham Field (MOD), Modesto, CATo Merced, CA
- 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
- Landing · aborted
- First occurrenceThe 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
- Abrupt maneuver
- 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
- Pilot in command › Aircraft control, excessive
- Pilot in command › Dynamic rollover, inadvertent
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 reported he was landing on a concrete pad at a construction site. The helicopter was not positioned completely on the concrete landing pad, and the aft section of the skids were hanging off the pad. While lowering the collective, the helicopter rocked back and the tail rotor skid touched the ground. The pilot abruptly attempted to pull the helicopter back into a hover, and the helicopter moved forward and started to roll to the right. The pilot was unable to stop the rolling movement, and the helicopter struck the ground, coming to rest on its right side.
Probable cause
The pilot's excessive movement of the helicopter's controls during an aborted landing, which resulted in a loss of control (dynamic rollover) and an in-flight collision with terrain.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record LAX03LA253
- Event ID
- 20030808X01296
- Case number
- LAX03LA253
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
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: c3ddfea7da7fc39a3e9b3ca82b0918025c77f840b943772aa3be4be62f0bca32; retrieved 2026-09-22T08:49:43.253Z.