Casualties unknown

Overweight Cessna Crashes After Departure Turn (N733SW)

Decatur Island, WA, US

On October 3, 2001, a Cessna 172N (registration N733SW) operated by West Isle Air, Inc. was involved in an aviation accident near Decatur Island, WA. Investigators recorded the probable cause as: The pilot's decision to operate the aircraft above its maximum gross takeoff weight, which contributed to the loss of control during a departure turn. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 2 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

A Cessna aircraft exceeded its maximum gross takeoff weight limit by 61 pounds before initiating a turn shortly after departure, resulting in a collision with trees.

What happened

Witnesses observed the aircraft shortly after departing from the northbound turf runway. The pilot initiated a 360-degree turn to the right (east). Shortly before completing the turn, the aircraft banked sharply to the left and pitched down. It collided with trees in a nose-low attitude.

The investigation

A post-accident examination of the airplane, engine, and associated components revealed no evidence of a preaccident failure or malfunction. The airplane's estimated gross weight at takeoff was 2,361 pounds. The airplane's published maximum gross takeoff weight is 2,300 pounds.

Probable cause

The pilot's decision to operate the aircraft above its maximum gross takeoff weight, which contributed to the loss of control during a departure turn.

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Frequently asked questions

What happened in the 3 Oct 2001 Cessna 172N accident near Decatur Island, WA?

A Cessna aircraft exceeded its maximum gross takeoff weight limit by 61 pounds before initiating a turn shortly after departure, resulting in a collision with trees.

What aircraft was involved and where did it happen?

The accident on 3 Oct 2001 involved a Cessna 172N, registration N733SW, operated by West Isle Air, Inc., at Decatur Island, WA.

What was the probable cause of the accident?

The pilot's decision to operate the aircraft above its maximum gross takeoff weight, which contributed to the loss of control during a departure turn.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20011011X02078. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.