Casualties unknown

Aircraft Collides with Trees After Dual Engine Issues (N989EB)

Waco, TX, US

On November 13, 1983, a Piper PA-23-250 (registration N989EB) operated by Gary Mack Roberts was involved in an aviation accident near Waco, TX. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-06-10Data APIEditorial standards

During climb to 7,500 ft, pilot encountered left engine overspeed, feathered it, then right engine failed. While on emergency vectors, aircraft struck trees after unable to reach a pasture.

Flight Sequence

The aircraft had climbed to approximately 7,500 feet when the pilot encountered an overspeeding left engine. The pilot turned back toward Waco and feathered the left propeller. While receiving emergency vectors to an airport, the right engine ceased operation. As the aircraft broke out of an overcast layer, the pilot observed a pasture and pumped the landing gear down. The aircraft was unable to reach the pasture and subsequently collided with trees.

Post-Accident Examination

Scoring was found on the cup of the left propeller governor, which was evidence of an overspeed condition. However, further examination of the governor did not reveal any evidence that would have caused an overspeed condition. No preimpact failure or malfunction of either engine was found.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001214X45050. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.