Engine power loss and wing stall during pattern turn

Casualties unknown • Richmond, VA, US

An aircraft experienced engine power loss and a subsequent wing stall during a traffic pattern turn, resulting in a ground loop into a grassy area.

What happened

Following an uneventful departure from the airport, the aircraft was being turned to enter the traffic pattern when the engine lost power. The pilot attempted a 180-degree left turn to return to the airport; however, during this maneuver, the aircraft overshot the runway.

In an attempt to realign with the runway, the pilot turned the airplane to the right. At approximately 50 feet above the ground, the right wing stalled. The aircraft continued to roll to the right and failed to respond to aileron inputs. The airplane impacted a grass area adjacent to the runway, resulting in a ground loop before coming to rest. There were no injuries reported.

The investigation

An examination of the wreckage was conducted. When fuel was drained from the carburetor bowl, the substance was found to be consistent with automotive fuel and was contaminated with water and other foreign object debris. Additionally, a witness reported that the pilot had experienced engine sputtering during the previous day, which had resulted in an uneventful forced landing at the airport.

Probable cause

The use of automotive fuel contaminated with water and foreign object debris led to engine power loss during the traffic pattern turn.

Frequently asked questions

What happened in the 2004-09-24 DE Havilland DHC-22A accident near Richmond, VA?

An aircraft experienced engine power loss and a subsequent wing stall during a traffic pattern turn, resulting in a ground loop into a grassy area.

What aircraft was involved and where did it happen?

The accident on 2004-09-24 involved a DE Havilland DHC-22A, registration N665WB, at Richmond, VA.

What was the probable cause of the accident?

The use of automotive fuel contaminated with water and foreign object debris led to engine power loss during the traffic pattern turn.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20041008X01598. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.

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