Tailwheel training excursion resulting in structural damage

Casualties unknown • Townsend, MT, US

A private pilot undergoing tailwheel endorsement instruction experienced a ground loop during a landing attempt, causing structural damage to the aircraft.

What happened

A flight instructor and a private pilot were conducting a training flight for the purpose of obtaining a tailwheel endorsement. Following several successful takeoffs and landings, the instructor directed the pilot to perform a full-stop wheel landing on runway 16, which was experiencing a six-knot crosswind at a 45-degree angle.

As the Cessna (type not specified in source) entered ground effect, the pilot reduced throttle too rapidly. This action increased the sink rate, resulting in a firm touchdown on the main landing gear. The pilot attempted to arrest a subsequent bounce using forward pressure and applied power to maintain directional control. However, the aircraft began to deviate from the runway centerline.

In an attempt to manage the deviation, the pilot lowered the tail, which led to an unstable flight condition. Although the instructor initially intervened to stabilize the aircraft, the pilot indicated they could handle the situation, prompting the instructor to return control to them. The instructor later noted that control may have been returned too prematurely, as the aircraft's track continued to deviate significantly from the centerline. Ultimately, the instructor could not regain directional control, and the aircraft entered a left-hand ground loop. During this maneuver, the right wing and elevator struck the ground, resulting in structural damage.

Findings

The investigation determined that the pilot's actions during the landing phase led to an unstable state. The primary factors included the rapid reduction of throttle while in ground effect and the subsequent loss of directional control during the ground loop.

Probable cause

The pilot's failure to maintain directional control during a wheel landing, exacerbated by returning control to the student too quickly after an initial period of instability.

Frequently asked questions

What happened in the 2007-10-10 Piper PA-22/20 accident near Townsend, MT?

A private pilot undergoing tailwheel endorsement instruction experienced a ground loop during a landing attempt, causing structural damage to the aircraft.

What aircraft was involved and where did it happen?

The accident on 2007-10-10 involved a Piper PA-22/20, registration N1139C, at Townsend, MT.

What was the probable cause of the accident?

The pilot's failure to maintain directional control during a wheel landing, exacerbated by returning control to the student too quickly after an initial period of instability.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20071102X01713. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.

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