ASN Wikibase Occurrence # 169413
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| Date: | Sunday 31 August 2014 |
| Time: | 18:00 |
| Type: |  de Havilland Canada DHC-2 Beaver |
| Owner/operator: | Private |
| Registration: | N93E |
| MSN: | 1149 |
| Year of manufacture: | 1956 |
| Total airframe hrs: | 4025 hours |
| Engine model: | Pratt & Whitney R-985-B5 |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Lake Hood (PALH), Anchorage, AK -
 United States of America
|
| Phase: | Take off |
| Nature: | Private |
| Departure airport: | Anchorage, AK (LHD) |
| Anchorage, AK | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that, just after takeoff while the airplane was about 100 ft above ground level, the engine lost all power. He attempted to restart the engine but was unsuccessful. He subsequently made a forced landing in an area of densely populated trees. During postaccident bench testing, the engine-driven fuel pump produced widely inconsistent fuel flow rates. Disassembly of the pump revealed that the oil seal on the spline driver shaft was split and that it was protruding through the opening in the thrust washer. The engine oil seal was not found inside the pump. It could not be determined whether the seal had ever been installed or if the seal had deteriorated inside the housing. The seal housing and pump bearings were dirty, and numerous pieces of foreign matter were noted within the seal and pump housing. Based on the evidence, it is likely that the fuel pump malfunctioned and caused a disruption of adequate fuel to the carburetor, which resulted in a loss of engine power.
Probable Cause: The loss of engine power during takeoff due to a malfunction of the engine-driven fuel pump.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=93E
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Sep-2014 06:46 | Aerossurance | Added |
| 01-Sep-2014 06:46 | Aerossurance | Updated [Aircraft type, Country] |
| 01-Sep-2014 06:49 | Aerossurance | Updated [Time, Aircraft type, Phase, Narrative, Plane category] |
| 01-Sep-2014 06:51 | Aerossurance | Updated [Phase, Departure airport, Source, Damage, Narrative] |
| 01-Sep-2014 08:50 | TB | Updated [Aircraft type] |
| 02-Sep-2014 15:22 | Aerossurance | Updated [Registration] |
| 03-Sep-2014 05:11 | Geno | Updated [Aircraft type, Cn, Operator, Location, Departure airport, Source] |
| 08-Sep-2014 09:51 | TB | Updated [Aircraft type, Location, Departure airport] |
| 21-Dec-2016 19:28 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 30-Nov-2017 19:00 | ASN Update Bot | Updated [Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative] |
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