DEN02LA055 · Cessna 175
Cessna 175 · Accident: total loss of engine power (mechanical failure) en route
From Ogden Hinckley Airport (OGD) to Bolinder Field Tooele Valley Airport (TVY)
Event
- NTSB case
- DEN02LA055
- 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
- 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
Cessna 175
- Aircraft type
- Cessna 175
- 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
- N7338M
- Operator
- Brent A. Carlson · private individual
- Onboard fatalities
- Unknown
- Route
- From Ogden Hinckley Airport (OGD), Ogden, UTTo Bolinder Field Tooele Valley Airport (TVY), Tooele, 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
- 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 (mechanical failure)
- 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
- Powerplant › Failure, total
- Reason for occurrence undetermined
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
While in cruise flight at 5,600 feet msl, the tachometer indicated the engine had lost 100 to 200 rpm (revolutions per minute) and shortly thereafter, the oil temperature "pegged high" but oil pressure remained steady at 25 psi. The engine vibrated and the upper cowling broke off, exposing a breach in the top of the casing aft of #3 cylinder. White smoke filled the cockpit, the engine seized, and the propeller stopped in the vertical position. A forced landing in salt water ensued. The last annual inspection on the airplane had been performed 9 years before the accident.
Probable cause
total mechanical loss of engine power for reasons undetermined. Contributing factors were the lack of an annual inspection and the (forced landing in) salt water.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record DEN02LA055
- Event ID
- 20020701X01008
- Case number
- DEN02LA055
- 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, coordinates. Values present in the bulk record are kept.
- The date is the local date; the NTSB stores the UTC date 2002-06-16.
- API snapshot SHA-256: 399ae0bcc014360e8200c45d0d6ae519844ef877cce9d70d2c186494d4e8edb8; retrieved 2026-09-21T19:41:59.375Z.