WPR09LA237 · Cessna U206E
Cessna U206E · Accident: loss of engine power (total) en route
From Yuba County Airport (MYV) to Yuba County Airport (MYV)
Event
- NTSB case
- WPR09LA237
- 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 U206E
- Aircraft type
- Cessna 206
- 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
- N1457M
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Yuba County Airport (MYV), Marysville, CATo Yuba County Airport (MYV), Marysville, CA
- 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
- 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
- Loss of engine power (total)
- 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
- Aircraft › Aircraft power plant
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The airplane owner/pilot departed for a personal flight with 55 gallons of fuel in the airplane's fuel tanks. After flying for nearly 40 minutes all engine power was suddenly lost. The pilot reported that, because he was only 1,100 feet above the ground, he had limited time to attempt an engine restart. Therefore, the pilot concentrated on performing the forced landing. The pilot landed in an open field. During rollout on the uneven terrain, the nose gear collapsed and the firewall was bent. Subsequently, the airplane was recovered and examined and no anomalies were found. The engine was test run and no evidence of any mechanical malfunction was noted. The airplane was equipped with an engine monitoring system that retained various engine related operating parameters. The extracted nonvolatile memory data revealed that the engine's exhaust gas temperature peaked a few seconds before the fuel flow decreased to zero and all power was lost. The data was consistent with an interruption of fuel flow to the engine due to an overly lean mixture; however, the investigation could not determine the cause of the excessively lean mixture.
Probable cause
A total loss of engine power during cruise flight due to an excessively lean mixture for undetermined reasons.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record WPR09LA237
- Event ID
- 20090511X34614
- Case number
- WPR09LA237
- 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. 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: 12a02a4f48fb08fc88a9ed56f05875c692798bc952655fc36e0424d03202838d; retrieved 2026-09-15T11:02:07.131Z.