Casualties unknown

2007-06-06: Grumman G-164A (N4673) — Sayre, OK

Sayre, OK, US

On June 6, 2007, a Grumman G-164A (registration N4673) was involved in an aviation accident near Sayre, OK. Investigators recorded the probable cause as: The partial loss of engine power on takeoff-initial climb for an undetermined reason. A factor associated with the accident was the lack of suitable terrain for a forced landing. 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

A pilot experienced a partial loss of engine power at 100 feet AGL during takeoff in a single-engine aerial application airplane, leading to a controlled descent into trees and a nose-over. The cause of the power loss was not determined.

Incident Overview

An airline transport pilot was conducting an aerial application flight in a single-engine, low-wing airplane. During the takeoff roll, the aircraft climbed to approximately 100 feet above ground level (AGL) when the engine experienced a partial loss of power. Unable to maintain altitude, the pilot executed a controlled descent into small trees located off the end of the runway. The airplane subsequently nosed over.

Post-Accident Inspection

Following the incident, an FAA inspector examined the airplane. The inspection revealed that there was sufficient fuel on board for the intended flight, and both water accumulators were empty. The aircraft had undergone its last annual inspection on March 21, 2007. At the time of the inspection, the airframe had accumulated a total of 7,392 flight hours. The engine had logged 7,500 total hours, with 100 hours since its last inspection.

Investigation Findings

Despite the examination, the cause for the partial loss of engine power was not determined.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20070626X00810. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.