On February 2, 1991, a Piper PA-22-150 (registration N7816D) operated by Robert J Spera was involved in an aviation accident near Wise, VA. Investigators recorded the probable cause as: A broken exhaust valve caused damage in the number three cylinder. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A pilot on an IFR flight experienced sudden power loss at 5,500 feet. Unable to return to the departure airport, he landed on a reclaimed strip mine. The nose gear collapsed, and the aircraft came to rest inverted, sustaining substantial damage. Engine inspection revealed a broken exhaust valve in cylinder three.
Incident Overview
A pilot had just departed the airport on an instrument flight rules (IFR) flight and was climbing through 5,500 feet when the aircraft suddenly lost significant power. The pilot immediately performed the emergency procedures for loss of power but could not correct the situation. With insufficient power to return to the departure field, the pilot elected to land on a reclaimed strip mine.
Landing and Post-Impact Condition
On touchdown, the nose landing gear broke away, and the aircraft tipped onto its nose before coming to rest inverted. The accident resulted in substantial damage to the aircraft.
Engine Examination
A subsequent inspection of the engine revealed damage in the number three cylinder caused by a broken exhaust valve.
Probable cause
A broken exhaust valve caused damage in the number three cylinder.
What happened in the 2 Feb 1991 Piper PA-22-150 accident near Wise, VA?
A pilot on an IFR flight experienced sudden power loss at 5,500 feet. Unable to return to the departure airport, he landed on a reclaimed strip mine. The nose gear collapsed, and the aircraft came to rest inverted, sustaining substantial damage. Engine inspection revealed a broken exhaust valve in cylinder three.
What aircraft was involved and where did it happen?
The accident on 2 Feb 1991 involved a Piper PA-22-150, registration N7816D, operated by Robert J Spera, at Wise, VA.
What was the probable cause of the accident?
A broken exhaust valve caused damage in the number three cylinder.
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