Casualties unknown

1989-07-30: Cessna 305A (N5209G) — Joseph E. Hefferman, Jr. — Chalfont, PA

Chalfont, PA, US

On July 30, 1989, a Cessna 305A (registration N5209G) operated by Joseph E. Hefferman, Jr. was involved in an aviation accident near Chalfont, PA. Investigators recorded the probable cause as: The exact cause of the engine power loss remains undetermined as no mechanical discrepancies were found, but it occurred shortly after takeoff from a private field. 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

An aircraft experienced engine power loss shortly after takeoff from a private field and landed in a soybean field where it nosed over. No mechanical issues were found during inspection.

What happened

The incident occurred shortly after the aircraft departed from a private airfield. During the initial climb phase, the engine lost power unexpectedly. Unable to maintain altitude, the pilot executed an emergency landing in an adjacent soybean field. Upon impact, the aircraft nosed over.

The investigation

Following the accident, a thorough inspection of the aircraft was conducted to determine the cause of the power loss. Mechanics performed a comprehensive engine check and examined all relevant systems for potential malfunctions or damage. Despite the severity of the landing, no mechanical discrepancies were found during the post-accident examination.

Findings

Weather conditions at the time of the incident were recorded with a temperature of 72 degrees Fahrenheit and a dew point of 59 degrees Fahrenheit. These conditions did not suggest any immediate meteorological hazards that would typically cause sudden engine failure. The lack of mechanical issues found during the inspection suggests the power loss may have been due to factors not evident in the physical examination, such as fuel supply interruption or pilot error, though these remain unconfirmed.

Safety message

This incident highlights the importance of pre-flight checks and monitoring engine instruments closely during takeoff. Pilots should be prepared for sudden power loss and practice emergency landing procedures regularly.

Probable cause

The exact cause of the engine power loss remains undetermined as no mechanical discrepancies were found, but it occurred shortly after takeoff from a private field.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X28972. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.