LAX86LA214 · MBB BO-105S
Evergreen Helicopters MBB BO-105S · Accident: loss of control in flight during initial climb
From LA JOLLY, CA to Montgomery-Gibbs Executive Airport (MYF)
Event
- NTSB case
- LAX86LA214
- 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
- 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
MBB BO-105S
- Aircraft type
- MBB BO-105
- 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
- N2784N
- Operator
- Evergreen Helicopters
- Onboard fatalities
- Unknown
- Route
- From LA JOLLY, CATo Montgomery-Gibbs Executive Airport (MYF), San Diego, 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
- Initial climb
- 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
- Substantial
Cause areas
- Company maintenance personnel › Maintenance, compliance with ad, improper
- Flt control syst, boost system › Locked
Approximate · Estimated position: the centre of La Jolla, CA, the place the record names. Not the accident site.
NTSB narrative
THE PILOT LOST CONTROL OF THE HELICOPTER'S ROTOR SYSTEM DURING THE INITIAL CLIMB PHASE OF THE FLIGHT. THE AIRCRAFT SPUN OUT OF CONTROL AND CRASHED ON AN INTERSTATE HIGHWAY. COMPANY MAINT APPLIED AD-85-26-02 TO DETECT OR PREVENT JAMMING OF ROTORCRAFT CONTROLS IN ACCORDANCE WITH SERVICE BULLETIN MBB BO-105 ON 1/1/86. THE ACFT HAD FLOWN 189 HRS SINCE THE MAINTENANCE WAS PERFORMED.
Verbatim NTSB analysis from the NTSB dataset
Sources
NTSB record LAX86LA214
- Event ID
- 20001213X33594
- Case number
- LAX86LA214
- 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: 2ce4981238968a8184d9d3ef940faa259f9fda561ecce882d6894a6afa3539f1; retrieved 2026-09-21T16:59:13.695Z.