Casualties unknown

Engine Failure During Takeoff Due to Lack of Maintenance (N6436M)

Cantwell, AK, US

On September 18, 1991, a Stinson 108-3 (registration N6436M) operated by Jerry S. Low was involved in an aviation accident near Cantwell, AK. Investigators recorded the probable cause as: The pilot's failure to perform proper preflight checks and maintain the aircraft, which resulted in an engine fuel system issue and subsequent loss of power during takeoff. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 1 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-06-19Data APIEditorial standards

An aircraft experienced an engine failure shortly after takeoff, resulting in a nose-over landing in a marshy area adjacent to the runway.

What happened

Shortly after initiating takeoff, the aircraft's engine ceased operation while the airplane was approximately 150 feet above ground level. Unable to maintain altitude, the pilot attempted an emergency landing in a marshy area located roughly one-quarter mile from the end of the runway. The impact caused the nose gear to collapse, resulting in a nose-over position for the aircraft.

The investigation

Post-accident inspection revealed that the engine was capable of normal operation once the fuel system was thoroughly flushed. This finding indicated that the engine itself had not suffered catastrophic mechanical failure but was instead deprived of proper maintenance over an extended period. Records showed that no appropriate maintenance had been performed on the aircraft's engine for the previous 18 years.

Findings

The investigation highlighted two critical factors contributing to the accident. First, the lack of maintenance on the engine for nearly two decades led to fuel system contamination or blockage, causing the power loss. Second, it was discovered that the pilot was operating the aircraft while holding a revoked pilot certificate, which is a serious violation of federal aviation regulations.

Safety message

This incident underscores the necessity of adhering to strict maintenance schedules and ensuring that all flight crew members hold valid, current certifications. Neglecting routine engine service can lead to sudden power loss, while operating with a revoked license compromises overall flight safety.

Probable cause

The pilot's failure to perform proper preflight checks and maintain the aircraft, which resulted in an engine fuel system issue and subsequent loss of power during takeoff.

Frequently asked questions

What happened in the 18 Sept 1991 Stinson 108-3 accident near Cantwell, AK?

An aircraft experienced an engine failure shortly after takeoff, resulting in a nose-over landing in a marshy area adjacent to the runway.

What aircraft was involved and where did it happen?

The accident on 18 Sept 1991 involved a Stinson 108-3, registration N6436M, operated by Jerry S. Low, at Cantwell, AK.

What was the probable cause of the accident?

The pilot's failure to perform proper preflight checks and maintain the aircraft, which resulted in an engine fuel system issue and subsequent loss of power during takeoff.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X18016. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.