FTW97LA270 · Bell 206L-1
Bell 206L-1 · Accident: partial loss of engine power (non-mechanical) during initial climb
From 7R3 to SHIP SHOAL 214, GM
Event
- NTSB case
- FTW97LA270
- 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
Bell 206L-1
- 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
- N3892R
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From 7R3To SHIP SHOAL 214, GM
- 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
- Partial loss of engine power (non-mechanical)
- 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
- Miscellaneous, engine compressor stall/surge
- Turboshaft engine › Foreign object
- Turboshaft engine › Ingested
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
After completing hover checks, the pilot initiated a takeoff through a cut in the trees. At about 60 feet AGL and 40 knots, a 'loud bang' occurred. The helicopter 'yawed left and the rotor rpm began to decay.' The pilot initiated an autorotation and made a 'hard/steep right turn' towards the only available landing area 75 yards to his right rear. The helicopter landed hard on its right skid and rolled over coming to rest on its right side. The engine was test run, and its performance exceeded new engine specifications. Following the test run, the engine was partially disassembled and inspected. Indications of blood and flesh were found in the impeller and through the compressor air discharge tubes. This finding was consistent with other engines that had been examined and found to have ingested green tree frogs. The pilot also reported that during his preflight inspection, he did not observe any green tree frogs.
Probable cause
partial loss of engine power due to frog(s) being ingested into the engine. Factors relating to the accident were: the lack of altitude and lack of suitable terrain for a forced landing.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record FTW97LA270
- Event ID
- 20001208X08382
- Case number
- FTW97LA270
- 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: 4bf950f7742d9364f8303f138b1970805cd94c00449cc502b890dd3b143bc8e6; retrieved 2026-09-22T19:07:45.333Z.