ASN Wikibase Occurrence # 41214
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| Date: | Friday 19 November 1993 |
| Time: | 12:53 LT |
| Type: |  de Havilland Canada DHC-1B-2 Chipmunk |
| Owner/operator: | Gerard E. Morgan |
| Registration: | N42597 |
| MSN: | 165/200 |
| Total airframe hrs: | 1200 hours |
| Engine model: | Continental IO-520-D |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Las Vegas, Nevada -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE AIRLINE TRANSPORT PILOT, WHO IS ALSO AN AIRFRAME AND POWERPLANT MECHANIC, WAS CONDUCTING A LOCAL AREA MAINTENANCE TEST FLIGHT. THE ENGINE BEGAN MISFIRING SHORTLY AFTER TAKEOFF. THE PILOT EXECUTED A RIGHT TURN TO RETURN TO THE AIRPORT, BUT INADVERTENTLY STALLED THE AIRPLANE. THE AIRPLANE NOSED DOWN SHARPLY AND CRASHED. EXAMINATION OF THE ENGINE FUEL SYSTEM REVEALED THAT THE FUEL INLET PASSAGE WAS CLOGGED WITH AN UNIDENTIFIED BLACK, SPONGE-LIKE MATERIAL. THIS CONDITION PREVENTED FUEL FROM GETTING TO THE FUEL INJECTOR ASSEMBLY RESULTING IN FUEL STARVATION. ALSO, TWO OF THE FUEL INJECTOR NOZZLE SCREENS WERE OBSTRUCTED; THE REMAINING SCREENS WERE PARTIALLY OBSTRUCTED. A FIXED-BASE OPERATOR AND THE REGISTERED OWNER REPORTED THAT THE FUEL NOZZLES HAD RECURRING CLOGGING. THE PILOT WAS COMPLETING A 100-HOUR INSPECTION AT THE TIME OF THE ACCIDENT. THE ENGINE EXAMINATION DISCLOSED EXTENSIVE FRETTING OF BOTH CRANKCASE HALVES AND ALL OF THE CYLINDERS BASES. THE ENGINE EXAMINATION, HOWEVER, DID NOT REVEAL ANY ABNORMALITIES WHICH WOULD HAVE PREVENTED THE ENGINE FROM PRODUCING POWER.
Probable Cause: Were the fuel injection line contamination resulting in fuel starvation; the pilot's inadequate 100-hour inspection; the pilot's improper decision to return to the airport at a low altitude; and his failure to maintain the proper airspeed which resulted in a stall.
Accident investigation:
 |
|
Sources:
NTSB LAX94LA051
FAA register: NTSB: http://www.ntsb.gov/ntsb/brief.asp?ev_id=20001211X13760
http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=42597
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 07-Nov-2011 12:49 | Dr. John Smith | Updated [Time, Operator, Location, Nature, Departure airport, Source, Narrative] |
| 21-Dec-2016 19:23 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 10-Apr-2024 10:05 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Nature, Departure airport, Source, Narrative, Category, Accident report] |
Corrections or additions? ... Edit this accident description
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