CHI99LA292 · Brantly Helicopter B-2B
Brantly Helicopter B-2B · Accident: total loss of engine power (non-mechanical) en route
From RLA · Jackson, MI to an unrecorded destination
Event
- NTSB case
- CHI99LA292
- 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
Brantly Helicopter B-2B
- Aircraft type
- Brantly B-2
- 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
- N2238U
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From RLA · Jackson, MITo 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
- En route · cruise
- 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
- Total loss of engine power (non-mechanical)
- Also codedOther events the NTSB coded in the sequence, such as a wire strike after a loss of power. Flight Findings uses them for its kinds of event. Glossary
- Fuel starvation
- 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 › Flare, misjudged
- Pilot in command › Preflight planning/preparation, inadequate
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot said he was flying the helicopter about 1,000 feet above ground level when the engine began sputtering. He said the engine sputtered until the helicopter was 500 feet above the ground and '...then the engine quit.' The pilot said he flared too late during the autorotation and the helicopter's tail struck the ground. He said the helicopter rolled onto its side during the ground collision sequence. The on-scene investigation revealed no mechanical anomalies with the engine or airframe that would prevent flight. Inspection of the fuel system revealed its vent line was plugged by a Mud Dauber Wasp. The fuel system does not have a vented cap. The fuel vent line is located on the bottom of the helicopter's fuselage and is visible to the pilot.
Probable cause
was an inadequate preflight and misjudged flare to landing during the autorotation by the pilot. A factor in this accident was a totally blocked fuel tank vent system.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI99LA292
- Event ID
- 20001212X19444
- Case number
- CHI99LA292
- 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: e312b7514052dfdb346c2f5d20da128f6838f730694b987f3764a625371bd74f; retrieved 2026-09-22T14:17:45.324Z.