CEN20LA389

NTSB accident investigation · Champion 8KCAB · Groton, SD · September 13, 2020

Accident · FatalClass 3 · LimitedFinal report
Date
September 13, 2020, 11:00 local (16:00 UTC)
Place
Groton, SD
Injuries
2 fatal
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N83DHChampion 8KCAB
Defining event
Maneuvering-aerobatics: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Central Region
Parties
FAA
FAA report
20200913012439A
Case key
101956

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 pilot’s loss of airplane control during a low-altitude aerobatic maneuver.

Findings · 3

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedAmerican Champion 8KCAB: 3 casesAll aircraft: 1,310 casesProbable cause
Performance/control parameters: pitch controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedAmerican Champion 8KCAB: 2 casesAll aircraft: 526 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

According to a witness, after takeoff, the pilot accelerated the airplane down the runway in ground effect before pitching the nose up to an estimated 45° angle. The airplane then rolled right and inverted and exited the roll maneuver in a nose-low attitude before impacting the ground. One witness estimated that the roll was initiated between 75 and 100 ft above ground level. Two witnesses reported that the maneuver appeared intentional due to the rapid roll rate. A family member stated that the pilot routinely performed low-level aerobatics in the accident airplane. Examination of the airplane confirmed continuity to all flight control surfaces and no engine or airframe anomalies were found that would have precluded normal operation. It is likely that the pilot intentionally attempted the aerobatic maneuver, lost control, and was unable to recover given the altitude available.

Factual narrative

On September 13, 2020, about 1100 central daylight time, an American Champion 8KCAB, N83DH, was substantially damaged when it was involved in an accident near Groton, South Dakota. The commercial pilot and passenger sustained fatal injuries. The airplane was operated as a Title 14 Code of Federal Regulations (CFR) Part 91 personal flight. According to a witness, after takeoff, the airplane accelerated down the runway in ground effect before the nose pitched up to an estimated 45° angle. The airplane then rolled right and inverted and exited the roll maneuver in a nose-low attitude before impacting the ground. One witness estimated that the roll was initiated between 75 and 100 ft above ground level (agl). Two witnesses reported that the maneuver appeared intentional due to the rapid roll rate. Of three witnesses interviewed, all stated that they did not know of any planned aerobatic maneuvers for the flight. The flight took place as part of a fundraising event sponsored by a group of pilots attempting to raise money to encourage youth interest in aviation. A family member stated that the pilot routinely performed low-level aerobatics in the accident airplane. There were no aerobatic waivers issued for the accident flight or for the fly-in event. The airplane came to rest about 200 yards south of runway 15. The airplane impacted in an upright, nose-low attitude before coming to rest inverted. Both wings, the fuselage, and empennage all sustained substantial damage. Flight control continuity was established from the cockpit controls to the ailerons, rudder, and elevator. Internal continuity of the engine was established. The propeller blades were sheared flush at the hub. A witness on the ground stated that the engine sounded “healthy” and he did not hear any interruption in power before impact. The postaccident examination revealed no mechanical malfunctions or anomalies that would have precluded normal operation.

Aircraft

Registration
N83DH
Reported as
Champion 8KCAB (No Series)
Category
Airplane
Serial number
786-96
Built
1997
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Aerobatic
Departed
2E6 · Groton, SD
Destination
2E6 · Groton, SD
Airport
2E6 · Groton Muni, runway 15, 2,070 × 140 ft, grass/turf

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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
64
Injuries
Fatal
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Waiver time limited special
Seat
Front
Toxicology
Performed
Flight hours
15,427 total

Weather

Conditions
Visual (VMC) · Day
Wind
170° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
63 °F, dew point 55 °F
Altimeter
30.05 inHg
Observed at
KABR, 14 nm away

Docket · 10

The files NTSB released with the investigation on June 13, 2022, on NTSB’s docket system: statements, records, photos and specialists’ reports. 6.0 MB in all.

FAA reports on this event · 1

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

Other investigations on N83DH · 1

Matched to the same aircraft by N-number and date.