DEN08FA122 · Hughes 269B
Ozark Mountain Helicopters Hughes 269B · Accident: low altitude operation/event while maneuvering
From Willow Springs, MO to an unrecorded destination
Event
- NTSB case
- DEN08FA122
- 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
- Unknown
- 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
Hughes 269B
- Aircraft type
- Hughes 269
- 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
- N469E
- Operator
- Ozark Mountain Helicopters
- Onboard fatalities
- Unknown
- Route
- From Willow Springs, MOTo 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
- Maneuvering · low-altitude flying
- Defining eventThe 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
- Low altitude operation/event
- 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
- Wire
- 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
- Environmental issues › Physical environment
- Personnel issues › Psychological
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The pilot flew to an off-airport location to pick up an electrical company employee. After being on the ground about eight minutes, the pilot and passenger then flew power line patrol looking for vegetation encroachment. One hour and 36 minutes after taking off one of the helicopter's main rotor blades impacted the middle strand of a crossing high voltage transmission line. The helicopter was destroyed by impact forces and postimpact fire. The impacted transmission line was approximately 100 feet above and crossed perpendicularly to the transmission line they were following. Examination of the helicopter wreckage revealed no preexisting anomalies that would have contributed to the accident.
Probable cause
The pilot's failure to maintain clearance from the crossing transmission line.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record DEN08FA122
- Event ID
- 20080722X01096
- Case number
- DEN08FA122
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
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, coordinates. 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: 92819ed44430076518281d7582d786d4e4350ed199dd52f0891779ca1de89e84; retrieved 2026-09-13T19:17:34.877Z.