ASN Wikibase Occurrence # 375920
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| Date: | Friday 15 November 1985 |
| Time: | 16:03 LT |
| Type: |  Beechcraft A45 |
| Owner/operator: | Civil Air Patrol |
| Registration: | N422NM |
| MSN: | 6-833 |
| Total airframe hrs: | 6986 hours |
| Engine model: | CONTINENTAL I0-520 SERIES |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Albuquerque, NM -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Training |
| Departure airport: | Kirkland Afb, NM (ABQ |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
WHILE MANEUVERING TO ENTER TRAFFIC AT ALAMEDA ARPT, THE PLT EXPERIENCED SEVERE ACFT VIBRATIONS. HE ATTEMPTED BUT WAS NOT ABLE TO REACH THE ARPT DUE TO RAPID LOSS OF AIRSPEED ANDALTITUDE. THE ACFT CRASHED 1/2 MILE FROM THE LANDING RWY. THE ONE PAX AND A WITNESS INDICATED THAT THE ACFT STALLED 20-30 FT AGL. THE INVESTIGATION REVEALED A FRACTURED PROPELLERPITCH ACTUATING PIN WHICH WAS CAUSED BY A RECENT IMPROPER OVERHAUL. THE HOLE IN WHICH THE PIN WAS INSTALLED WAS IMPROPERLY DRILLED, ALLOWING THE PIN TO BOTTOM OUT BEFORE TORQUE COULD BE APPLIED TO THE SHAFT. EXAMINATION OF THE FRACTURED SURFACES BY METALLURGIAL LABORATORY ANALYSIS REVEALED A PROGRESSIVE TYPE OF FAILURE.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB DEN86FA023
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 29-Mar-2024 10:53 | ASN Update Bot | Added |
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