Casualties unknown

Engine Power Loss During Demonstration Flight Leads to Forced Landing (N9183D)

Butler, PA, US

On April 17, 1994, a Piper PA-22 (registration N9183D) operated by Mark Smith was involved in an aviation accident near Butler, PA. Investigators recorded the probable cause as: The pilot's failure to select the proper fuel tank, which resulted in fuel starvation and the loss of engine power. 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 a sales demonstration flight, the pilot performed a low pass and entered a left downwind when the engine lost power. The airplane forced-landed in a field, striking trees and cartwheeling. Fuel quantities and placard found.

Flight and Incident

A sales demonstration flight was conducted with a prospective buyer aboard. As part of the demonstration, the pilot executed a low pass over the runway and then entered a left downwind leg. While turning downwind, the engine experienced a loss of power.

Forced Landing and Impact

The pilot performed a forced landing in a field. During the landing, the airplane struck trees and cartwheeled across the ground.

Examination Findings

Post-accident examination of the airplane revealed fuel quantities: the fuel strainer contained two ounces of fuel, and the carburetor fuel bowl contained one ounce. The left fuel tank held 8.5 gallons of fuel. A placard was found positioned over the right fuel gauge, which stated: 'NO TAKE-OFF ON RIGHT TANK WITH LESS THAN 1/3 TANK'.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001206X01049. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.