SEA98GA159 · Bell 212
Bell 212 · Accident: partial loss of engine power (mechanical failure) while maneuvering
From Burns Municipal Airport (BNO) to an unrecorded destination
Event
- NTSB case
- SEA98GA159
- 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
- Government
- 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 212
- Aircraft type
- Bell 212
- 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
- N291B
- Operator
- BLM (vale District)
- Onboard fatalities
- Unknown
- Route
- From Burns Municipal Airport (BNO), Burns, ORTo 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
- Public Aircraft
- 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
- Partial loss of engine power (mechanical failure)
- 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
- External load cable/hook › Binding(mechanical)
- Fluid, fuel › Flow restricted
- Fuel system, fuel control › Disabled
- Pilot in command › Clearance, not maintained
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot-in-command (PIC) had just maneuvered the Bell 212 helicopter into a 100 foot hover above a small reservoir to fill a 'Bambi' bucket for fire-fighting operations. The rotorcraft began to settle. The PIC, perceiving that he had encountered rotor vortex conditions, slipped the helicopter to the right with the bucket still in the reservoir. This, in turn, increased the angle of the long line from the vertical or zero degree reference. Immediately thereafter, the PIC noted a loss of power in the #1 engine. He then executed a single-engine autorotation, during which a rotor blade impacted a dead tree. Post-crash examination revealed that the long line had pulled aft and left from its vertical reference into the airframe structure (the 7:30 position of the hell hole in the belly of the helicopter) resulting in 1) the separation of one of the #1 engine push/pull rods, and 2) the deformation of engine control rods associated with the #1 engine flight idle stop (solenoid) which then sheared. The shearing of the flight idle stop resulted in a restriction/cessation of fuel flow to the #1 engine fuel control unit, and subsequent engine shutdown.
Probable cause
The pilot-in-command's failure to maintain proper clearance between the long line cable and hell hole structure resulting in airframe contact and binding of the cable. This resulted in separation/disabling of the fuel control solenoid and a subsequent restriction/cessation of fuel flow to the #1 engine. Contributing factors were separation of the #1 engine push/pull rod and a tree.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record SEA98GA159
- Event ID
- 20001211X10954
- Case number
- SEA98GA159
- 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: d53f70b752e34d3f731e5a862f3fe7345c73badb02a4e35f91d6dc7e63cc5174; retrieved 2026-09-18T21:21:28.589Z.