SEA95LA060 · Cessna 150H
Cessna 150H · Accident: total loss of engine power (non-mechanical) en route
From Portland Mulino Airport (4S9) to Lebanon State Airport (S30)
Event
- NTSB case
- SEA95LA060
- 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
- 0
- 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 150H
- Aircraft type
- Cessna 150
- 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
- N6663S
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Portland Mulino Airport (4S9), Mulino, ORTo Lebanon State Airport (S30), Lebanon, 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
- En route · descent
- 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)
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Destroyed
Cause areas
- Pilot in command › Carburetor heat, not used
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
THE PILOT REPORTED THAT HE PLACED 5 GALLONS OF AUTO GAS IN THE AIRCRAFT AFTER A FUEL STOP AT MULINO AND THEN DEPARTED FOR LEBANON, OREGON. HE STATED THAT WHILE EN ROUTE HE INADVERTENTLY ENTERED A CLOUD AT NIGHT WHILE DESCENDING TO LAND AT HIS DESTINATION. HE INITIATED A CLIMB AND RECEIVED AN IFR CLEARANCE. WHEN HE BROKE OUT OF IMC CONDITIONS, HE CANCELED IFR AND REDUCED POWER FROM 2600 RPM TO ABOUT 2200 RPM AND DESCENDED, WITHOUT USING CARBURETOR HEAT. AT ABOUT 2000 FEET THE ENGINE QUIT AND THE PROP STOPPED WITHOUT WARNING. NO EVIDENCE OF ANY MECHANICAL PROBLEM WAS FOUND DURING THE INVESTIGATION AND THE PILOT STATED THAT HE BELIEVED THE ENGINE STOPPAGE TO BE DUE TO CARBURETOR ICING WHICH WAS NOT PRECEDED BY ROUGHNESS OR POWER DECREASE.
Probable cause
THE PILOT'S FAILURE TO USE CARBURETOR HEAT. FACTORS INCLUDE ICING CONDITIONS AND THE DARK NIGHT LIGHT CONDITIONS.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record SEA95LA060
- Event ID
- 20001207X03193
- Case number
- SEA95LA060
- 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: local date, investigation status. Values present in the bulk record are kept.
- The date is the local date; the NTSB stores the UTC date 1995-03-04.
- API snapshot SHA-256: 669dd07300ecbece5df9ef120a9466b6b878d2c3e40ae62074788a31bda20cf0; retrieved 2026-09-21T22:22:23.003Z.