WPR12LA392 · Cessna 210
Cessna 210 · Accident: loss of engine power (total) en route
From Williston, ND to Heber City, UT
Event
- NTSB case
- WPR12LA392
- 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 210
- Aircraft type
- Cessna 210
- 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
- N7321E
- Operator
- Ernest P. Jessop · private individual
- Onboard fatalities
- Unknown
- Route
- From Williston, NDTo Heber 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
- 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 › Fluids/miscellaneous hardware
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The pilot reported that before the accident flight, he verified that both of the airplane’s fuel tanks were full and that he reviewed the pilot operating handbook for the fuel consumption rate for his intended flight. While he was en route, the pilot noticed that the fuel gauges indicated that both the left and right tanks were about 1/4 full. The pilot stated that he diverted to a nearby airport. As the airplane descended, the left fuel tank “gave out,” and the pilot switched the fuel selector to the right fuel tank. However, as the airplane approached the airport, the engine lost power. Despite the pilot’s attempts, the engine would not restart, and the pilot made a forced landing to an open field.
Wreckage recovery personnel reported that they removed about 4 ounces of fuel from the right fuel tank and 4 gallons from the left fuel tank. According to the Cessna 210 pilot operating handbook, the airplane’s fuel system contained 3.5 gallons of unusable fuel per tank. Both the left and right fuel caps and seals were intact and undamaged. No additional mechanical anomalies were noted. It is likely that the engine lost power due to fuel exhaustion.
A postaccident examination of the airplane revealed that the right wing fuel bladder tank was mostly disconnected from all of its internal retaining clips, and the left wing fuel bladder tank was disconnected from two of its internal clips. The displacement of the fuel bladder tanks from the retaining clips likely resulted in the pilot observing inaccurate fuel level indications in the tanks and on the fuel gauges during the preflight visual inspection. The maintenance logbooks were not made available for review and thus a maintenance history could not be determined.
Probable cause
The total loss of engine power due to fuel exhaustion. Contributing to the accident was the incorrect installation of the fuel bladder tanks.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record WPR12LA392
- Event ID
- 20120903X33336
- Case number
- WPR12LA392
- 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: f210899a712b2beff4573b46b95bfb78b0b570a7bca97aaa5aaa7ffebc1a8106; retrieved 2026-09-15T19:38:58.197Z.