ASN Wikibase Occurrence # 198853
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| Date: | Wednesday 21 July 2010 |
| Time: | 13:00 |
| Type: |  Air Tractor Inc AT-401 |
| Owner/operator: | Robert N. Morgan |
| Registration: | N45297 |
| MSN: | 401-0760 |
| Engine model: | P&W R1340 SERIES |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Toulin, IL -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | Walnut, IL |
| Walnut, IL | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that he had made his last agricultural spray run. The airplane was about 200 feet above ground level when one of the engine's cylinders cracked resulting in oil covering the windshield. The pilot flew to a satellite airstrip about 5 miles away. The pilot reported that the airstrip was short and his visibility was reduced due to the oil-covered windshield. The airplane overran the runway and nosed over when it collided with a ditch. A postaccident inspection of the airplane revealed that the number two cylinder of the engine had a crack located near the front spark plug and stretching to the rear spark plug. The Federal Aviation Administration had previously issued an Airworthiness Directive (AD) addressing the accident engine model. The AD required initial and repetitive visual and florescent penetration inspections of cylinders for cracking. This document was prompted by reports of cylinder head cracking which can result in the loss of engine power. The airplane’s logbooks indicated that 18 hours of time in service had elapsed since the last visual inspection of the cylinder per the AD requirements.
Probable Cause: A partial loss of engine power as a result of a cracked cylinder and the reduced visibility due to the oil-covered windshield.
Accident investigation:
 |
|
Sources:
NTSB
History of this aircraft
Other occurrences involving this aircraft
| 1 August 1994 | N45297 | Evans Flying Service | 0 | Mcgehee, AR | |
sub |
| 31 March 2003 | N45297 | 0 | Knox, Indiana | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 19-Aug-2017 16:00 | ASN Update Bot | Added |
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