Casualties unknown

Unauthorized Flight Ends in Anchorage Crash Due to Fuel Exhaustion and Intoxication (N6523H)

Anchorage, AK, US

On September 30, 1990, a Cessna 172M (registration N6523H) was involved in an aviation accident near Anchorage, AK. Investigators recorded the probable cause as: The pilot's unauthorized operation of the aircraft combined with fuel exhaustion and significant alcohol impairment. 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 2026-06-19Data APIEditorial standards

A pilot stole an aircraft from a local flying school and flew low over downtown Anchorage before running out of fuel. The crash resulted in injuries, and the pilot had a blood alcohol level more than double the legal limit.

What happened

The incident began when an individual took control of a light aircraft without authorization from a flight training facility located at a local airport. Instead of following standard procedures or remaining on the ground, the unauthorized operator initiated a flight that brought the aircraft into close proximity with populated areas.

Observers noted the aircraft flying at an extremely low altitude over the downtown district of Anchorage, Alaska. The estimated height above ground level ranged between 10 and 40 feet, posing a significant risk to public safety in an urban environment. During this flight, the pilot reported that the aircraft had exhausted its fuel supply.

The flight concluded when the aircraft impacted terrain in a wooded area near Anchorage. Subsequent examination of the pilot revealed a blood alcohol concentration of 219 mg/dL (0.219%), which is significantly above the legal limit for operating an aircraft. This level of intoxication was a critical factor in the unauthorized nature of the flight and the subsequent loss of control due to fuel starvation.

The investigation

Investigative personnel examined the circumstances surrounding the theft of the aircraft from the flying school. Analysis of the pilot's physiological state showed a high degree of impairment, which likely contributed to poor decision-making regarding fuel management and flight planning. The mechanical condition of the aircraft was consistent with fuel exhaustion.

Findings

The primary factors leading to this accident included the unauthorized use of the aircraft, fuel exhaustion, and severe alcohol intoxication. The pilot's inability to manage the fuel load resulted in a forced landing in an unsuitable area. The high blood alcohol level indicates that impairment played a major role in the entire sequence of events.

Safety message

This case highlights the critical importance of physical security at flight training facilities to prevent unauthorized access to aircraft. Additionally, it underscores the severe legal and safety consequences of operating an aircraft while intoxicated.

Probable cause

The pilot's unauthorized operation of the aircraft combined with fuel exhaustion and significant alcohol impairment.

Frequently asked questions

What happened in the 30 Sept 1990 Cessna 172M accident near Anchorage, AK?

A pilot stole an aircraft from a local flying school and flew low over downtown Anchorage before running out of fuel. The crash resulted in injuries, and the pilot had a blood alcohol level more than double the legal limit.

What aircraft was involved and where did it happen?

The accident on 30 Sept 1990 involved a Cessna 172M, registration N6523H, at Anchorage, AK.

What was the probable cause of the accident?

The pilot's unauthorized operation of the aircraft combined with fuel exhaustion and significant alcohol impairment.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X24153. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.