ASN Wikibase Occurrence # 22918
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| Date: | Saturday 20 September 2008 |
| Time: | 09:45 |
| Type: | Stearman C3B |
| Owner/operator: | Tobin Larry F |
| Registration: | N3440 |
| MSN: | 104 |
| Total airframe hrs: | 1290 hours |
| Engine model: | P & W R-985 SERIES |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Stevenson, WA -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Portland, OR (UAO) |
| Pascoe, WA (PSC) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that he had completed a cross-country flight reenacting the airmail route. During the flight, the pilot had applied carburetor heat, but the engine lost power. He attempted to restart the engine, but was unsuccessful; he then performed a forced landing in a field. During the landing roll, the airplane collided with a tree and sustained substantial damage. While the pilot had purchased the engine and carburetor that were over 60 years old, they were in new condition and had been in storage. A maintenance facility bench tested the carburetor and it checked within limits, but due to its pristine condition it was not disassembled prior to installation on the engine. The carburetor operated for 110 hours before disintegrating gasket material entered into the main fuel jet and disrupted the fuel flow, which allowed the engine to lose power. Postaccident examination of the carburetor showed that after the gasket material was removed from the jet the carburetor operated normally.
Probable Cause: A loss of engine power due to fuel starvation from a piece of disintegrating gasket material that was blocking the fuel jet. Also causal was the failure of maintenance personnel to verify the condition of the gaskets when the carburetor was examined prior to installation on the engine.
Accident investigation:
 |
|
Sources:
NTSB
History of this aircraft
Other occurrences involving this aircraft
| 16 July 2011 | N3440 | Private | 0 | Spokane, Washington | |
sub |
| Gear collapse | ||||||
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Jun-2012 07:05 | TB | Updated [Time, Location, Phase, Nature, Source, Narrative] |
| 21-Dec-2016 19:14 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Dec-2016 19:16 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Dec-2016 19:20 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 03-Dec-2017 12:05 | ASN Update Bot | Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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