Accident Details
Probable Cause and Findings
The instructor pilot's inadequate remedial action to the dual student's loss of aircraft control during high speed taxiing which lead to the inadvertent ground loop/swerve. A factor was the student not maintaining aircraft control.
Aircraft Information
Registered Owner (Current)
Analysis
On July 28, 2003, about 1800 central daylight time, a Champion 7GCBC, N9032L, piloted by a commercial rated instructor pilot, sustained substantial damage when it ground looped during a high speed taxi at Harding County Airport (9D2), near Buffalo, South Dakota. Visual meteorological conditions prevailed at the time of the accident. The instructor and the dual student reported no injuries. The 14 CFR Part 91 instructional flight was not operating on a flight plan. The local flight was originating at the time of the accident.
The instructor pilot reported:
We were practicing fast taxi for directional control. The aircraft
had slowed enough that the tail was on the ground but we were still
going fairly fast (25-30 mph indicated). The aircraft started to go right,
and I assisted the student in straightening it by applying a small
amount of left brake. Then the aircraft started to swerve violently
to the left, and I applied full right brake, which didn't stop the
motion but may have kept the wing from hitting the ground. We
made approximately a half circle, turning about 135 [degrees],
managing to stay on the runway the whole time. The aircraft never
left the ground. We were using Runway 30 with a light east wind.
The instructor reported no mechanical malfunctions prior to the accident and stated that the aircraft sustained damage to the airframe tubing during the accident.
Data Source
Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# CHI03LA178