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Casualties unknown

1987-08-12: Grumman G-164B (N48614) — Adams Flying Service — Oak Grove, LA

Oak Grove, LA, US

On August 12, 1987, a Grumman G-164B (registration N48614) operated by Adams Flying Service was involved in an aviation accident near Oak Grove, LA. Investigators recorded the probable cause as: The engine failure during the turn, which led to an inadequate forced landing site selection and subsequent nose-over; the cause of the engine failure was not determined. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 2 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards

An agricultural aircraft experienced an unexplained engine failure while executing a turn after completing its final pass, resulting in a nose-over during a forced landing attempt.

What happened

The incident occurred following the completion of the last pass of an agricultural operation. The pilot initiated a pull-up to begin a turn when the engine began shaking and losing power. In response to the mechanical failure, the pilot attempted a forced landing in a nearby soft field.

Upon touchdown, the aircraft's wheels bogged down four or five inches into the soft, wet soil. This loss of traction caused the aircraft to nose over, coming to rest in an inverted attitude.

The investigation

Investigators examined the circumstances surrounding the engine failure but were unable to determine the specific mechanical cause. No further details regarding the examination of the airframe or engine components were provided in the source material.

Findings

The primary finding was that the engine failure occurred during a low-altitude maneuver, leaving insufficient altitude for a successful landing. The soft and wet condition of the field contributed to the nose-over after touchdown. The official cause of the engine failure remained undetermined.

Probable cause

The engine failure during the turn, which led to an inadequate forced landing site selection and subsequent nose-over; the cause of the engine failure was not determined.
Engine failure

Related events

Same operator

More accident analyses

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X31796. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.