LAX88FA032 · Robinson R22A
Helicopter Adventures Robinson R22A · Accident: loss of control in flight while maneuvering
From Buchanan Field (CCR) to an unrecorded destination
Event
- NTSB case
- LAX88FA032
- 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
- 2 · all aircraft and ground
- Ground fatalities
- 0
- 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
Robinson R22A
- Aircraft type
- Robinson R22
- 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
- N8475A
- Operator
- Helicopter Adventures
- Onboard fatalities
- Unknown
- Route
- From Buchanan Field (CCR), Concord, CATo not recorded
- 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
- 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
- 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
- Destroyed
Cause areas
- Reason for occurrence undetermined
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
THE STUDENT WAS ON A DUAL FLIGHT, REVIEWING MANEUVERS & PROCEDURES TO REVALIDATE AN EXPIRED CFI CERTIFICATE. AN EXAM OF HIS LOG REVEALED THAT ON THE LAST 2 FLIGHTS, HE OCCUPIED THE LEFT PILOT SEAT & PRACTICED TEACHING QUICK STOPS, HOVERING AUTOROTATIONS, LOW ROTOR RPM RECOVERY & THROTTLE CUTS. WITNESSES SAID THE HELICOPTER HAD BEEN WORKING THE AREA ABOUT 20 MIN NEAR A HILL TOP. THEY SAID THE HELICOPTER WAS HOVERING 'AT 400' AGL' WHEN THE ENGINE NOISE SUDDENLY 'DIED OFF' & THEN THEY HEARD A LOUD 'POP.' THEY SAW PARTS FALLING OFF THE HELICOPTER AS IT FELL. AN EXAM OF THE WRECKAGE REVEALED A MAIN ROTOR BLADE ENTERED THE LEFT SIDE OF THE COCKPIT. NO PREIMPACT SYSTEM MALFUNCTION WAS FOUND. TOXICOLOGY TESTS SHOWED A TRACE OF MARIJUANA METABOLITE IN THE INSTRUCTOR'S URINE, BUT A TOXICOLOGIST CONCLUDED THERE WAS NO 'CURRENT INFLUENCE' OF THE DRUG. A TRACE OF COCAINE METABOLITE WAS DETECTED IN THE STUDENT'S URINE. THE SAFETY BOARD FOUND THAT THERE WAS INSUFFICIENT EVIDENCE TO CONCLUDE THAT DRUGS HAD AFFECTED EITHER PILOT'S ABILITY TO OPERATE THE AIRCRAFT.
Probable cause
A DIVERGENCE OF THE MAIN ROTOR FROM ITS NORMAL PLANE OF ROTATION FOR AN UNDETERMINED REASON, WHICH RESULTED IN ROTOR CONTACT WITH THE COCKPIT AREA.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record LAX88FA032
- Event ID
- 20001213X32539
- Case number
- LAX88FA032
- 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. 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: b9645f23f0fac06dc65180cebf9c2586741475ec6980f0cf25b77d6d06796758; retrieved 2026-09-21T03:55:16.033Z.