Casualties unknown

Pilot Disoriented by Strong Winds, Lands at Wrong Airstrip After Navigation Error (N9640B)

Telida, AK, US

On September 16, 1991, a Cessna 180 (registration N9640B) operated by Patrick S. Twohy was involved in an aviation accident near Telida, AK. Investigators recorded the probable cause as: THE PILOT GETTING DISORIENTED DURING FLIGHT DUE TO HIS INATTENTIVENESS, THE AIRPLANE'S LOW FUEL LEVEL, THE FSS SPECIALIST'S GIVING THE PILOT AN INCORRECT HEADING TO FLY, POOR RADIO COMMUNICATIONS BETWEEN THE FSS AND THE PILOT, THE STRONG CROSSWIND, AND THE… 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 2026-07-04Data APIEditorial standards
Aircraft registered N9640B
Aircraft registered N9640B. Photo: Jeroen Stroes Aviation Photography from Netherlands / CC BY 2.0, via Wikimedia Commons

A pilot became disoriented due to stronger than anticipated winds, received a mistaken heading from flight service, and with fuel nearly exhausted, landed at a small airstrip 70 miles off course, ground looping in a 35-knot crosswind.

Incident Overview

A pilot reported becoming disoriented during a flight due to stronger than anticipated enroute winds. The pilot radioed a Flight Service Station (FSS) to report being disoriented and low on fuel, requesting an ADF steer to an airport. However, the FSS specialist mistakenly provided a heading that directed the pilot further away from the intended destination rather than toward it.

Loss of Communication

Despite numerous attempts, the FSS specialist was unable to re-establish contact with the pilot to correct the erroneous heading. Approximately 43 minutes after the initial communication, with fuel nearly exhausted, the pilot landed at a small airstrip located about 70 miles northeast of the intended destination.

Landing and Ground Loop

During the landing, the pilot encountered an estimated 35-knot crosswind. The pilot lost directional control, and the airplane ground looped. No further details on the aircraft or injuries were provided in the source.

Frequently asked questions

What happened in the 16 Sept 1991 Cessna 180 accident near Telida, AK?

A pilot became disoriented due to stronger than anticipated winds, received a mistaken heading from flight service, and with fuel nearly exhausted, landed at a small airstrip 70 miles off course, ground looping in a 35-knot crosswind.

What aircraft was involved and where did it happen?

The accident on 16 Sept 1991 involved a Cessna 180, registration N9640B, operated by Patrick S. Twohy, at Telida, AK.

What was the probable cause of the accident?

THE PILOT GETTING DISORIENTED DURING FLIGHT DUE TO HIS INATTENTIVENESS, THE AIRPLANE'S LOW FUEL LEVEL, THE FSS SPECIALIST'S GIVING THE PILOT AN INCORRECT HEADING TO FLY, POOR RADIO COMMUNICATIONS BETWEEN THE FSS AND THE PILOT, THE STRONG CROSSWIND, AND THE AIRPLANE'S LANDING PERFORMANCE CAPABILITY BEING EXCEEDED.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X18007. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.