SEA07LA156 · Cessna 340A
Cessna 340A · Accident: total loss of engine power (non-mechanical) en route
From Laughlin Bullhead International Airport (IFP) to Ontario International Airport (ONT)
Event
- NTSB case
- SEA07LA156
- 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 340A
- Aircraft type
- Cessna 340
- 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
- N340WS
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Laughlin Bullhead International Airport (IFP), Bullhead City, AZTo Ontario International Airport (ONT), Ontario, 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
- 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 (non-mechanical)
- 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
- Fuel starvation
- 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
- Fluid, fuel › Starvation
- Pilot in command › Fuel tank selector position, improper
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The pilot stated that he did not visually inspect the fuel level in the tanks of the twin-engine airplane before departure. About 15 minutes into the flight, he noticed that the fuel gages were "erratic." About 5 minutes later, the left engine lost power and then regained power with no action by the pilot. Shortly thereafter, the right engine lost power, and the pilot "went to aux pumps" and attempted a restart with no success. The left engine then lost power for the second time, and the pilot "went to aux pumps" and attempted a restart with no success. The pilot made a forced landing in the desert, and during the landing roll, the airplane struck rocks. Examination of the airplane revealed that the right main tank was intact and contained no fuel, and the left main tank was punctured and contained a trace of fuel. The right and left auxiliary tanks contained 27 and 21 gallons of fuel, respectively. Both the left and right fuel selectors were positioned to the right main tank, and both auxiliary fuel pump switches were in the low position. Review of the Pilot's Operating Handbook for the Cessna 340A indicated that in order to utilize the fuel in the auxiliary tanks, the left and right fuel selectors must be positioned to the left and right auxiliary tanks, respectively, and the auxiliary fuel pump switches should be placed in the low position. When questioned about the amount of fuel on board the airplane at departure, the pilot stated that he believed fuel must have been stolen from the airplane while it was parked on the ramp for three days prior to the accident. A written statement was obtained from the line service technician who refueled the airplane, which confirmed that he topped off the airplane with 74.6 gallons of 100LL three days before the accident.
Probable cause
The loss of engine power from both engines due to fuel starvation resulting from the pilot's improper fuel tank selector position. Contributing factors were the pilot's inadequate preflight inspection and the lack of suitable terrain for the forced landing.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record SEA07LA156
- Event ID
- 20070703X00866
- Case number
- SEA07LA156
- 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: 1e4f5acd4edc0d2c4fa6bd2b560fb62037d1a67d16f8192fe4a0211c5b6b7c8e; retrieved 2026-09-21T18:29:42.050Z.