CHI03LA178

NTSB accident investigation · Champion 7GCBC · Buffalo, SD · July 28, 2003

Accident · No injuriesLimited investigationFinal report
Date
July 28, 2003, 18:00 local (23:00 UTC)
Place
Buffalo, SD
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N9032LChampion 7GCBC
Weather
Visual (VMC) · Day
Status
Completed · report March 2, 2004
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20030728016889A
Case key
57597

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

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.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of control - on ground/waterTaxi
Aircraft control - not maintainedDual studentFactor
Remedial action - inadequatePilot in command(cfi)Cause
Ground loop/swerve - inadvertentPilot in command(cfi)Cause

Analysis

The tail wheel equipped airplane sustained substantial damage when it ground looped during a high speed taxi. The instructor stated, "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. ... 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.

Factual narrative

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.

Aircraft

Registration
N9032L
Reported as
Champion 7GCBC
Category
Airplane
Serial number
259-70
Airframe hours
1,820
Engine
Lycoming O-320-A2B, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Registered owner
Robert W Johnson
Airworthiness certificate
Standard, Aerobatic; Standard, Normal
Last inspection
Annual · July 16, 2003 · 30 hours before
Departed
9D2 · Buffalo, SD
Airport
9D2 · Harding County, runway 30, 3,900 × 60 ft, asphalt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew · 2

As NTSB recorded them. NTSB leaves out names.

Role
Flight instructor
Age
22
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--no waivers/lim.
Last flight review
February 18, 2003
Seat
Rear
Flight hours
498 total · 69 in this make and model · 388 as pilot in command · 136 in the last 90 days · 32 in the last 30 days · 1 in the last 24 hours
Role
Student pilot
Injuries
None
Seat
Front
Flight hours
14 total · 12 in this make and model · 14 in the last 90 days · 4 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
70° at 10 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
91 °F, dew point 48 °F
Altimeter
29.96 inHg
Observed at
K2WX

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.