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Casualties unknown

Engine Power Loss Leads to Pond Landing (N3629X)

Immokalee, FL, US

On June 26, 1991, a Grumman G164B (registration N3629X) operated by Airwork Enterprises OF Florida was involved in an aviation accident near Immokalee, FL. Investigators recorded the probable cause as: Loss of engine power during maneuvering; the cause could not be determined as no evidence of failure or malfunction was found in the engine and carburetor after 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 2026-06-22Data APIEditorial standards

An aircraft experienced an unexplained loss of engine power while maneuvering, resulting in a nose-over landing in a pond. Mechanical inspection revealed no evidence of failure or malfunction.

What happened

The pilot was maneuvering the aircraft when it experienced an unexpected loss of engine power. Unable to maintain altitude or airspeed, the pilot executed an emergency landing in a nearby pond. The aircraft touched down and subsequently nosed over upon impact with the ground.

The investigation

Following the accident, the aircraft was recovered from the water for inspection. Mechanics performed a thorough overhaul of the engine and carburetor to determine the cause of the power loss. Despite the extensive mechanical examination, no evidence of failure or malfunction was found in either component.

Findings

The investigation could not determine the specific reason for the loss of engine power. The mechanical components appeared to be functioning normally after the overhaul, leaving the cause of the power interruption undetermined.

Probable cause

Loss of engine power during maneuvering; the cause could not be determined as no evidence of failure or malfunction was found in the engine and carburetor after overhaul.

Frequently asked questions

What happened in the 26 Jun 1991 Grumman G164B accident near Immokalee, FL?

An aircraft experienced an unexplained loss of engine power while maneuvering, resulting in a nose-over landing in a pond. Mechanical inspection revealed no evidence of failure or malfunction.

What aircraft was involved and where did it happen?

The accident on 26 Jun 1991 involved a Grumman G164B, registration N3629X, operated by Airwork Enterprises OF Florida, at Immokalee, FL.

What was the probable cause of the accident?

Loss of engine power during maneuvering; the cause could not be determined as no evidence of failure or malfunction was found in the engine and carburetor after overhaul.

More accident analyses

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X17345. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.