ASN Wikibase Occurrence # 41246
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Date: | Saturday 25 January 1997 |
Time: | 10:38 |
Type: | Thorp T-18 |
Owner/operator: | private |
Registration: | N40918 |
MSN: | 1 |
Fatalities: | Fatalities: 2 / Occupants: 2 |
Aircraft damage: | Destroyed |
Category: | Accident |
Location: | San Diego, CA -
United States of America
|
Phase: | Take off |
Nature: | Training |
Departure airport: | (SDM) |
Destination airport: | |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:According to pilots who were familiar with the accident aircraft, the engine had a history of power loss events dating back several months prior to the accident flight. On the day of the accident, the CFI and the dual student/aircraft owner had completed two touch-and-go landings and were on crosswind leg when the engine abruptly quit. A crash and postcrash fire resulted from the ensuing forced landing. A postcrash investigation revealed that a check valve was present in the engine fuel system to provide fuel under pressure to the carburetor when the electric boost pump was operating. The check valve was disassembled and was found to have no internal components. This permitted the fuel to circulate back to the fuel pump inlet and interfered with fuel flow to the carburetor. CAUSE: Installation by the pilot/owner of an unairworthy check valve in the fuel system of the amateur built aircraft, which resulted in inadequate fuel flow to the engine and subsequent engine failure. A factor in the accident was the owner's operation of the aircraft with known deficiencies.
Sources:
NTSB:
http://www.ntsb.gov/ntsb/brief.asp?ev_id=20001208X07319 Revision history:
Date/time | Contributor | Updates |
24-Oct-2008 10:30 |
ASN archive |
Added |
21-Dec-2016 19:23 |
ASN Update Bot |
Updated [Time, Damage, Category, Investigating agency] |
28-Oct-2018 08:40 |
liamdaniel98 |
Updated [Narrative] |
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