Loss of control during touch-and-go maneuver at Speck-Fehraltorf

Casualties unknown • Speck-Fehraltorf Flugplatz (LSZK), ZH, CH

A private training flight in a Pelikan U4M resulted in an excursion into a cornfield after the aircraft veered right during a touch-and-go landing.

What happened

On September 6, 2014, a private pilot was conducting a solo training session at the Speck-Fehraltorf airfield (LSZK). The flight sequence included a go-around, a touch-and-go, and two full landings. Following these maneuvers, the pilot attempted another takeoff and a subsequent touch-and-go. Immediately after lifting off, the Pelikan U4M, registered as HB-TBZ, experienced a sudden loss of control and veered to the right. The aircraft reached an altitude of less than one meter before the right wing struck a cornfield located adjacent to the runway. The aircraft continued to slide through the field for approximately 10 meters before coming to a halt, eventually coming to rest in a position facing the opposite direction of its initial entry path. The pilot sustained no injuries and was able to exit the aircraft without assistance.

The investigation

Investigators examined the circumstances surrounding the loss of control and the resulting damage to the aircraft. The pilot reported no pre-existing technical defects or mechanical issues that could have contributed to the incident. Weather conditions at the time of the accident were reported as good, though wind conditions were noted to be variable. The investigation focused on the flight dynamics during the critical phase of the touch-and-go maneuver.

Findings

  • The aircraft sustained significant damage, including a detached engine, a collapsed left landing gear, and damage to the left wing and tail section.
  • The primary cause of the accident was a loss of control immediately following takeoff during a touch-and-go maneuver.
  • The aircraft's trajectory led it into a cornfield, where the right wing made initial contact with the crops.

Probable cause

The aircraft veered right and lost control immediately after liftoff during a touch-and-go maneuver, leading to an excursion into an adjacent field.

Frequently asked questions

What happened in the 2014-09-06 WALTER UETZ, FLUGZEUGBAU PELIKAN U4M accident near Speck-Fehraltorf Flugplatz (LSZK), ZH, CH?

A private training flight in a Pelikan U4M resulted in an excursion into a cornfield after the aircraft veered right during a touch-and-go landing.

What aircraft was involved and where did it happen?

The accident on 2014-09-06 involved a WALTER UETZ, FLUGZEUGBAU PELIKAN U4M, registration HB-TBZ, at Speck-Fehraltorf Flugplatz (LSZK), ZH, CH.

What was the probable cause of the accident?

The aircraft veered right and lost control immediately after liftoff during a touch-and-go maneuver, leading to an excursion into an adjacent field.

Investigation report by the Swiss Transportation Safety Investigation Board (STSB / SUST). Original record: https://www.sust.admin.ch/inhalte/AV-berichte/HB-TBZ.pdf. This page is a structured re-presentation; facts and quotes are in the Swiss Transportation Safety Investigation Board (STSB), Switzerland.

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