SEA96LA065 · Nicholson THORP T18CWS THORP T18C
Nicholson THORP T18CWS THORP T18C · Accident: in flight collision with object on approach
From Wendover Airport (ENV) to U42 · Salt Lake City, UT
Event
- NTSB case
- SEA96LA065
- 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
Nicholson THORP T18CWS THORP T18C
- Aircraft type
- Nicholson THORP T18CWS
- Category
- Airplane
- 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
- N24WN
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Wendover Airport (ENV), Wendover, UTTo U42 · Salt Lake City, UT
- 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
- Approach · VFR go-around
- 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
- Wire, transmission
- 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 › Clearance, not maintained
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot reported that while flying at 600 feet above ground level, he noticed that there was no oil pressure indication. He attempted a precautionary landing to a paved road, but had to initiate a go-around because of a truck on the road. During the go-around, the airplane collided with a power line that was approximately 100 feet AGL. The airplane was unable to maintain flight and subsequently collided with the terrain.
Probable cause
the pilot's failure to maintain clearance from a powerline. A transmission wire and an oil pressure reading of zero were factors.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record SEA96LA065
- Event ID
- 20001208X05333
- Case number
- SEA96LA065
- 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: local date, investigation status. Values present in the bulk record are kept.
- The date is the local date; the NTSB stores the UTC date 1996-02-28.
- API snapshot SHA-256: bdfd38c4e15130eff9ff33c28f9599072a396954eba5ba93f9f3e873301ccc0d; retrieved 2026-09-22T22:47:14.104Z.