Casualties unknown

1998-03-10: Aeronca 7AC (N1659E) — Peter A. Polin — Lone Pine, CA

Lone Pine, CA, US

On March 10, 1998, an Aeronca 7AC (registration N1659E) operated by Peter A. Polin was involved in an aviation accident near Lone Pine, CA. Investigators recorded the probable cause as: The failure of maintenance personnel to properly tighten the magneto clamps during installation of the engine on the aircraft following engine overhaul. 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 1781061362Data APIEditorial standards

The pilot reported an engine misfire at about 3,000 feet agl, followed by a loss of almost all power. After an unsuccessful attempt to restore power, the pilot glided toward an abandoned airfield but landed in a pasture, colliding with bushes and hidden obstacles. Magnetos were found loose during recovery.

Engine Power Loss

During a climb through approximately 3,000 feet above ground level, the pilot reported that the engine began to misfire and subsequently lost almost all power. An attempt to restore normal engine power was unsuccessful.

Forced Landing

The pilot established a glide toward an abandoned airfield, but determined that the altitude was insufficient to reach it. Instead, the pilot executed a landing in a pasture. During the landing, the aircraft collided with bushes and hidden obstacles in the grass.

Post-Accident Findings

After the wreckage was recovered by technicians from an aircraft recovery firm, both magnetos were found loose in their clamps. A review of the logbooks indicated that the engine had accumulated 67 hours since a major overhaul, which was completed on May 1, 1997. No further maintenance entries were recorded after the overhaul.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001211X09713. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.