ANC07LA026 · Cessna 175
Cessna 175 · Accident: partial loss of engine power (mechanical failure) en route
From X47 · Bunnell, FL to Haller Airpark (7FL4)
Event
- NTSB case
- ANC07LA026
- 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
- N8092T
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From X47 · Bunnell, FLTo Haller Airpark (7FL4), Green Cove Springs, FL
- 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
- Partial 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
- Substantial
Cause areas
- Engine assembly, piston › Separation
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The solo commercial pilot was on a cross-country personal flight operated under Title 14, CFR Part 91. The pilot reported that while in cruise flight about 2,500 feet above the ground, the engine began to run rough and lose power. Black smoke began coming from within the engine compartment, followed by a severe engine vibration, and then a complete loss of engine power. The pilot selected an open swampy area as an emergency landing area. During the emergency landing, the airplane's nose wheel collided with a large stump, and the wings collided with a stand of trees. The airplane sustained substantial damage to the wings, fuselage, and empennage. After recovery, an FAA airworthiness inspector examined the airplane. The FAA inspector reported a hole in the crankcase adjacent to the number one cylinder. He said that he found the number one piston assembly in the oil sump, and that the number one piston wristpin remained attached to the connecting rod. He said that portions of the engine crankshaft assembly were broken, and he noted a significant amount of rotational scoring in the internal portions of the engine.
Probable cause
The loss of engine power during cruise due to the separation of an engine piston, which resulted in a forced landing in a swamp and a collision with trees.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ANC07LA026
- Event ID
- 20070411X00389
- Case number
- ANC07LA026
- 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, 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: 110ad4715b69e5d331356536d388c9fb6e67fe6cdfbe42aee4272d78bd215acc; retrieved 2026-09-22T03:56:22.741Z.