SEA06LA154 · Piper PA-23-150
Piper PA-23-150 · Accident: total loss of engine power (non-mechanical) on approach
From Southwest Wyoming Regional Airport (RKS) to Ontario Municipal Airport (ONO)
Event
- NTSB case
- SEA06LA154
- 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
Piper PA-23-150
- Aircraft type
- Piper PA-23
- 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
- N1221P
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Southwest Wyoming Regional Airport (RKS), Rock Springs, WYTo Ontario Municipal Airport (ONO), Ontario, OR
- 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
- Approach · VFR pattern turn to base
- 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 exhaustion
- 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 › Exhaustion
- Pilot in command › In-flight planning/decision, inadequate
- Pilot in command › Refueling, not performed
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 estimated there was 82 gallons of fuel on board when he departed on the second leg of the cross-country flight. Approximately 3 hours and 30 minutes later, after the gear was down and locked and while turning from downwind to base, the pilot noticed a vibration coming from the left side of the airplane; an unsuccessful attempt to lower the flaps confirmed that the left engine had failed. Being high and fast with no flaps the pilot elected to continue his approach and land, but over the approach end of the runway the right engine quit. The pilot then attempted to force the airplane onto the runway, which resulted in several bounces. The airplane made firm contact with the runway, then overran the end of the runway, going off the end of the runway, and then over an irrigation ditch before coming to rest upright in an onion field. A post-accident investigation of the airplane's four fuel tanks revealed that the right auxiliary, right main, and left main fuel tanks were empty, while the left auxiliary fuel tank had about 2 inches of fuel remaining. The investigation revealed no anomalies with the airplane, which would have precluded normal operation. The pilot stated that he didn't know where the fuel went, only that he encountered some high winds en route to his destination.
Probable cause
The pilot's inadequate inflight decision by failing to refuel while en route, resulting in fuel exhaustion and the loss of power. Factors were the en route high wind condition and the soft terrain.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record SEA06LA154
- Event ID
- 20060814X01164
- Case number
- SEA06LA154
- 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: fae77126cba8c55a791b8f72cc1e2ce2633c0c6b9b531e8599fe99342a88aea6; retrieved 2026-09-21T18:42:22.089Z.