ASN Wikibase Occurrence # 358093
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| Date: | Thursday 26 October 1995 |
| Time: | 16:10 LT |
| Type: |  Great Lakes 2T-1A-2 |
| Owner/operator: | Chandler Air Service, Inc. |
| Registration: | N3808F |
| MSN: | 0776 |
| Year of manufacture: | 1977 |
| Total airframe hrs: | 1559 hours |
| Engine model: | LYCOMING AEIO-360-B1G6 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Chandler, AZ -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Private |
| Departure airport: | , AZ (KCHD) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT ELECTED TO MAKE AN OFF-AIRPORT LANDING DUE TO A ROUGH ENGINE, OIL ON THE WINDSHIELD, AND A RADIO REPORT THAT HIS AIRCRAFT WAS TRAILING SMOKE. DURING THE ROLLOUT ON A DIRT ROAD, THE AIRCRAFT STRUCK A DITCH AND NOSED OVER. EXAMINATION OF THE ENGINE REVEALED THAT AN INTAKE MANIFOLD SEAL WAS LEAKING AT THE ATTACHMENT TO THE #4 CYLINDER, AND THERE WAS A BURNED HOLE IN THE #4 PISTON. THE PROPELLER SHAFT SEAL HAD BEEN DISPLACED FORWARD ONTO THE ENGINE PROPELLER SHAFT, AND THE ENGINE OIL SUPPLY HAD BEEN VENTED OVERBOARD THROUGH THE ENGINE BREATHER AND AROUND THE PROPELLER SHAFT. THE ENGINE HAD BEEN OVERHAULED 11 HOURS PRIOR TO THE ACCIDENT.
Probable Cause: the improper installation of an intake manifold tube assembly during engine overhaul which permitted leakage into the induction system resulting in detonation and piston failure in the associated cylinder.
Accident investigation:
 |
|
Sources:
NTSB LAX96LA023
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Mar-2024 09:51 | ASN Update Bot | Added |
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