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Engine Power Loss During Initial Climb Leads to Collision with Power Lines and Trailer (N44678)

Palmetto, GA, US

On September 22, 1990, a Piper PA-28-151 (registration N44678) was involved in an aviation accident near Palmetto, GA. Investigators recorded the probable cause as: THE NUMBER TWO CYLINDER EXHAUST VALVE STICKING IN THE CLOSED POSITION, WHICH RESULTED IN A PARTIAL POWER LOSS DURING THE TAKEOFF. 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 2026-07-04Data APIEditorial standards

During preflight, the pilot observed a vibration after engine start, shut down, then re-started. At about 25 feet AGL during initial climb, the engine lost power, resulting in collision with power lines and a trailer.

Preflight Events

During preflight, after starting the engine, the pilot observed a vibration. He assumed a fouled spark plug and leaned the mixture. He then shut down the engine. After restarting, he stated that the vibration had ceased.

Accident Sequence

During the initial climb, at approximately 25 feet above ground level (AGL), the engine suddenly lost power. The airplane subsequently collided with power lines and a trailer before impacting terrain.

Post-Accident Inspection

An inspection of the engine revealed a stuck number two exhaust valve.

Witness Observations

A witness on the ground reported hearing a 'hissing' noise coming from the engine during the preflight ground run. The same witness also stated that the pilot performed between four and six magneto checks prior to takeoff.

Engine failure

Frequently asked questions

What happened in the 22 Sept 1990 Piper PA-28-151 accident near Palmetto, GA?

During preflight, the pilot observed a vibration after engine start, shut down, then re-started. At about 25 feet AGL during initial climb, the engine lost power, resulting in collision with power lines and a trailer.

What aircraft was involved and where did it happen?

The accident on 22 Sept 1990 involved a Piper PA-28-151, registration N44678, at Palmetto, GA.

What was the probable cause of the accident?

THE NUMBER TWO CYLINDER EXHAUST VALVE STICKING IN THE CLOSED POSITION, WHICH RESULTED IN A PARTIAL POWER LOSS DURING THE TAKEOFF. A FACTOR IN THE ACCIDENT WAS THE PILOT'S IMPROPER PREFLIGHT INSPECTION, IN THAT HE DID NOT CORRECTLY ANALYZE THE ENGINE PROBLEM PRIOR TO FLIGHT.

More accident analyses

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X24187. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.