ASN Wikibase Occurrence # 371050
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| Date: | Wednesday 25 May 1988 |
| Time: | 09:10 LT |
| Type: | Rockwell A9B |
| Owner/operator: | Panhandle Aviation |
| Registration: | N7787V |
| MSN: | 1540 |
| Total airframe hrs: | 1678 hours |
| Engine model: | LYCOMING IO-540-G1C5 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Marianna, FL -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE ACFT SUSTAINED A COMPLETE & SUDDEN POWER LOSS WHILE ENGAGED IN AG OPERATIONS AT LOW ALT. THE PROP, FWD PORTION OF THE CRANKSHAFT, CYL HEAD & OTHER ENG PARTS SEPARATED FROM THE ACFT. THE ACFT STRUCK A ROW OF 40 FT TREES & CRASHED TO THE GRND. AN EXAM OF THE FAILED CRANKSHAFT REVEALED THAT IT HAD SEPARATED JUST FWD OF THE NO. 2 MAIN BEARING. LAB ANALYSIS REVEALED EVIDENCE TO SUGGEST THE CRANKSHAFT FAILED DUE TO FATIGUE. THE OWNER OF THE ACFT STATED THE ENG HAD BEEN OVERHAULED IN THE PAST BUT HE DID NOT KNOW WHEN OR BY WHOM. ENG LOGBOOK ENTRIES DID NOT REFLECT ANY ENG OVERHAUL.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB MIA88FA178
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 25-Mar-2024 17:29 | ASN Update Bot | Added |
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