ASN Wikibase Occurrence # 373025
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| Date: | Friday 22 May 1987 |
| Time: | 16:00 LT |
| Type: |  Boeing A75N1 |
| Owner/operator: | Gast, Eugene O. |
| Registration: | N90840 |
| MSN: | 75-1619 |
| Year of manufacture: | 1943 |
| Total airframe hrs: | 1800 hours |
| Engine model: | CONTINENTAL W6706N |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | San Ardo, CA -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Oceano, CA (L52) |
| San Rafael, CA (KSRF) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DURING A PLEASURE CROSS COUNTRY FLIGHT, THE ENGINE EXPERIENCED A PARTIAL LOSS OF ENGINE POWER. THE PLT MADE A FORCED LANDING WHERE PRIOR TO TOUCHDOWN THE ACFT COLLIDED WITH POWER LINES THEN CONTACTED THE TERRAIN IN APRX THREE FT OF WATER. THE ACFT HAS HISTORY OF FOULED SPARK PLUGS RESULTING IN A ROUGH RUNNING ENGINE. THE SPARK PLUGS WERE REMOVED AND INSPECTED, NOTING THAT THE NUMBER 4 PLUG WAS FINGER TIGHT. FRONT AND BACK PLUGS 1, 2, 6, AND 7 DISPLAYED NORMAL OPERATING SIGNATURES. NUMBERS 3, 4, AND 5 WHEN REMOVED A CONSIDERABLE AMOUNT OF A WATER AND OIL MIXTURE DRAINED. A SANDY TYPE SUBSTANCE AND VEGETATION WERE NOTED ON THE PLUGS.THERE WAS NO MECHANICAL FAILURE OR MALFUNCTION NOTED IN THE REST OF THE SYSTEM.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB LAX87LA214
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Mar-2024 08:46 | ASN Update Bot | Added |
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