On May 1, 1998, a Bellanca BL-17-30A (registration N6645V) operated by John S. Abernathy was involved in an aviation accident near Brewton, AL. No fatalities were reported. Investigators recorded the probable cause as: Improper maintenance procedures used to overhaul the engine, which led to the crankshaft failure. Contributing to the severity of the accident was the fence. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A pilot experienced a loss of engine power and performed a forced landing in a field. The aircraft struck a fence during the landing roll, resulting in substantial damage. No injuries were reported.
Incident Overview
A pilot experienced a loss of engine power and executed a forced landing in a field. During the landing roll, the aircraft collided with a fence, resulting in substantial damage. The pilot was not injured.
Engine Examination
Post-incident examination of the engine revealed that the number 3 main bearing had spun. The crankshaft was broken at the number 3 cheek. Additionally, the crankcase exhibited fretting at the case mating surfaces, consistent with improper through-bolt torque.
Maintenance History
The engine had undergone a top overhaul 197.4 hours prior to the failure of the crankshaft.
What happened in the 1 May 1998 Bellanca BL-17-30A accident near Brewton, AL?
A pilot experienced a loss of engine power and performed a forced landing in a field. The aircraft struck a fence during the landing roll, resulting in substantial damage. No injuries were reported.
Were there any fatalities in the 1 May 1998 Bellanca BL-17-30A accident?
No fatalities were recorded in this accident.
What aircraft was involved and where did it happen?
The accident on 1 May 1998 involved a Bellanca BL-17-30A, registration N6645V, operated by John S. Abernathy, at Brewton, AL.
What was the probable cause of the accident?
Improper maintenance procedures used to overhaul the engine, which led to the crankshaft failure. Contributing to the severity of the accident was the fence.
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