ASN Wikibase Occurrence # 368574
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| Date: | Sunday 18 June 1989 |
| Time: | 17:45 LT |
| Type: |  Cessna 172E |
| Owner/operator: | Radio Systems Technology, Inc. |
| Registration: | N3618S |
| MSN: | 17250818 |
| Total airframe hrs: | 5562 hours |
| Engine model: | CONTINENTAL O-300 |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Grass Valley, CA -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Private |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT REPORTED THE AIRCRAFT CLIMBED 50 TO 150 FEET ABOVE THE RUNWAY WHEN THE ENGINE BEGAN RUNNING ROUGH AND LOOSING POWER. HE WAS UNABLE TO MAINTAIN ALTITUDE AND ELECTED TO LAND ON A ROAD. THE AIRCRAFT'S WING STRUCK A BRIDGE DURING THE LANDING ROLL AND THE AIRCRAFT OVERTURNED. THE ENGINE LOG REFLECTED THAT THE RIGHT MAGNETO POINTS AND DISTRIBUTOR BLOCK WERE REPLACED AND BOTH MAGNETOS WERE RETIMED ON JULY 14, 1981 AT 4329 TOTAL AIRFRAME HOURS. THERE WAS NO EVIDENCE THAT INSPECTIONS WERE PERFORMED DURING THE EIGHT YEARS AND 1,233 OPERATIONAL HOURS PRECEDING THE ACCIDENT. DURING THE POST ACCIDENT ENGINE TEST THE RIGHT MAGNETO FAILED AFTER OPERATING FOR 10 MINUTES. AN EXAMINATION OF THE RIGHT MAGNETO COIL DISCLOSED EVIDENCE OF ARCING.
Probable Cause: FAILURE TO PERFORM MAINTENANCE INSPECTIONS PRESCRIBED BY THE MAGNETO, ENGINE AND AIRCRAFT MANUFACTURERS. THE HIGH DENSITY ALTITUDE AND TERRAIN CONDITIONS WERE CONTRIBUTING FACTORS.
Accident investigation:
 |
|
Sources:
NTSB LAX89LA221
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 23-Mar-2024 19:55 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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