CEN21LA016

NTSB accident investigation · Kitfox Classic 4 · New Carlisle, OH · October 13, 2020

Accident · Minor injuriesClass 4 · LimitedFinal report
Date
October 13, 2020, 13:40 local (17:40 UTC)
Place
New Carlisle, OH · Airport, Runway 28
Injuries
2 minor
Damage
Destroyed
Phase of flight
Landing
Aircraft
N47KCKitfox Classic 4
Defining event
Landing-landing roll: Nose over/nose down
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Central Region
Parties
Federal Aviation Administration (FAA) Cincinnati FSDO
FAA report
20201013019529A
Case key
102140

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 failure to maintain pitch control of the airplane during landing, which caused the airplane to nose over during landing roll. Contributing to the accident was the main landing gear modification which increased the airplane’s tendency to nose over during ground operations.

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.

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

The pilot and his pilot-rated-passenger were conducting a local flight in the tailwheel-equipped experimental airplane. The accident occurred during the first landing after the original main landing gear, equipped with bungie-cord shock absorber, had been replaced with a main landing gear equipped with a steel-spring shock absorber. The pilot reported that after a normal touchdown on the main landing gear he pushed the control stick slightly forward to keep the airplane from ballooning, but the airplane nosed over during the landing roll. A witness reported seeing the airplane’s tail continue to rise during the landing roll until the airplane nosed over on the runway. A postaccident fire destroyed the airplane’s cabin and the inboard halves of both wings. A postaccident review of the airplane’s weight-and-balance record indicated that the owner/builder had correctly recalculated the center-of-gravity (CG) position after the main landing gear replacement, and although the CG location had not moved appreciably, the wheel axle position had moved aft about 2.75 inches, thus increasing the airplane’s tendency to nose over during ground operations.

Aircraft

Registration
N47KC
Reported as
Kitfox Classic 4 (NO SERIES)
Category
Airplane, amateur-built
Serial number
C04060296
Built
2006
Airframe hours
45
Engine
Rotec R2800, 100 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · October 16, 2019 · 4 hours before
Airport
3OH0 · Andy Barnhart Memorial Airport, runway 28, 2,000 × 150 ft, grass/turf
Equipment
Unknown

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
Pilot
Age
73
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Seat
Left
Restraint
3-point
Flight hours
1,066 total · 45 in this make and model · 824 as pilot in command
Role
Pilot-rated passenger
Age
72
Injuries
Minor
Certificate
Private
Airplane ratings
Single-engine land
Medical
BasicMed
Last flight review
July 13, 2018
Seat
Right
Restraint
3-point
Flight hours
365 total · 325 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
240° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
64 °F, dew point 36 °F
Altimeter
30.13 inHg
Observed at
FFO, 6.5 nm away

Docket · 5

The files NTSB released with the investigation on July 27, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.5 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.