ASN Wikibase Occurrence # 133674
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| Date: | Saturday 19 September 1998 |
| Time: | 14:14 LT |
| Type: |  Piper PA-22 TRI-PACER |
| Owner/operator: | Michael P. Maloney |
| Registration: | N6028D |
| MSN: | 22-4681 |
| Year of manufacture: | 1956 |
| Total airframe hrs: | 1600 hours |
| Engine model: | Lycoming O-360-A3A |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Thornton, CO -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Aurora, CO (O1V) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
While in cruise flight at 1,200 feet agl, on a banner tow flight, 21.6 inches of one of the two bladed 38-inch propeller blades separated from the aircraft. The engine separated from three of the four engine mounts and swung around against the right side of the aircraft. The remaining propeller blade penetrated the cockpit but did not strike the pilot. The aircraft became uncontrollable and impacted in a field after striking trees in the back yard of a home. The propeller blade failed due to fatigue from corrosion pitting. The pilot received serious injuries.
Probable Cause: The separation of a propeller blade due to corrosion initiated fatigue, followed by the separation of several of the engine's mounts, and the subsequent inability of the pilot to control the aircraft. A contributing factor was the trees.
Accident investigation:
 |
|
Sources:
NTSB FTW98FA392
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Dec-2016 19:26 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 25-Jun-2017 16:45 | Anon. | Updated [Narrative] |
| 25-Jun-2017 16:46 | harro | Updated [Narrative] |
| 25-Jun-2017 16:46 | harro | Updated [Aircraft type] |
| 20-Jun-2023 08:29 | BEAVERSPOTTER | Updated [[Aircraft type]] |
| 06-Apr-2024 06:06 | 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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