FTW98FA306 · Bell 47G
Bell 47G · Accident: in flight collision with object en route
From 2DT · Oklahoma City, OK to 5F2 · Tulsa, OK
Event
- NTSB case
- FTW98FA306
- 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
Bell 47G
- Aircraft type
- Bell 47
- 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
- N12085
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From 2DT · Oklahoma City, OKTo 5F2 · Tulsa, OK
- 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
- In flight collision with object
- 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
- Tree(s)
- 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
- Pilot in command(cfi) › Clearance, not maintained
- Pilot in command(cfi) › Low altitude flight/maneuver, performed
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The helicopter impacted trees during cruise flight at low altitude in visual meteorological conditions. Subsequently, the helicopter impacted the ground and a fire erupted. Aboard were a 122-hour private pilot, who had just successfully completed the checkride for addition of a rotorcraft rating to his certificate, and his 8,394-hour flight instructor. The flight was en route from the airport where the checkride had taken place, and they were heading back to the airport where the helicopter was based. The accident occurred in a rural area approximately 13 nautical miles from the departure airport and along the direct route of flight to the destination. A witness observed the helicopter in cruise flight at a 'pretty low' altitude with the tail swinging from side to side. The witness reported that as the helicopter neared a 'big tree' in its flight path, the helicopter's 'nose went up a little, and the helicopter rose up over the tree.' The witness looked away, heard the noise of the helicopter stop, looked back, and 'saw pieces flying through the air.' Examination of the wreckage revealed no evidence of any anomalies that would have precluded normal operation of the helicopter.
Probable cause
The pilot's failure to maintain adequate clearance from the trees during a low altitude flight/maneuver.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record FTW98FA306
- Event ID
- 20001211X10554
- Case number
- FTW98FA306
- 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: 0e5e969990ac4848f27150944efbacbcf668d695a5277e8d81fa774e21c46007; retrieved 2026-09-20T22:30:44.028Z.