ASN Wikibase Occurrence # 294424
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| Date: | Saturday 2 October 2004 |
| Time: | 10:25 LT |
| Type: |  WACO Classic Aircraft YMF |
| Owner/operator: | Solid Edge Aviation Dba Red Rock Biplane Tours |
| Registration: | N43064 |
| MSN: | F5062 |
| Total airframe hrs: | 2985 hours |
| Engine model: | Jacobs R755-B2M |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Sedona, Arizona -
 United States of America
|
| Phase: | Unknown |
| Nature: | Unknown |
| Departure airport: | Sedona Airport, AZ (SDX/KSEZ) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The engine lost partial power during flight, and the airplane collided with a vehicle during a forced landing on a road. The pilot was performing a local for hire sightseeing flight for two passengers. Approximately 15 minutes into the flight, a loud "popping" noise was heard coming from the engine. The pilot was unable to maintain altitude and force landed on a city street. During the landing roll, the right wing impacted a car on the road. Post accident examination of the engine revealed that the number 7 cylinder exhaust valve rocker arm had failed in fatigue. The surface fracture initiation marks were consistent with a grinding operation during manufacture. The grinding operation is performed to remove any flash remaining at the mold parting line, after the casting operation, and is normally carried out by holding the part by hand and guiding it on a large grinding wheel.
Probable Cause: a loss of engine power due to the fatigue fracture of the number 7 cylinder exhaust rocker arm as a result of a grinding operation during manufacture.
Accident investigation:
 |
|
Sources:
NTSB LAX05LA002
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 11-Oct-2022 18:05 | ASN Update Bot | Added |
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