CEN10CA238

NTSB accident investigation · Ankerstar Bradley D RAND-ROBINSON KR2 · Hamilton, OH · April 14, 2010

Accident · No injuriesData collectionFinal report
Date
April 14, 2010, 13:00 local (17:00 UTC)
Place
Hamilton, OH
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N774AAnkerstar Bradley D RAND-ROBINSON KR2
Defining event
Landing-flare/touchdown: Abnormal runway contact
Weather
Visual (VMC) · Day
Status
Completed · report July 22, 2010
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA-CVG FSDO
FAA report
20100414004949A
Case key
75938

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

On this page

Probable cause

The pilot's improper flare resulting in a hard landing and collapsed landing gear.

Findings · 1

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: landing flareAircraft › Aircraft oper/perf/capability · Not attained/maintainedAnkerstar Bradley D RAND-ROBINSON KR2: 1 caseAll aircraft: 1,285 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

The pilot reported that he was performing high speed taxi testing of his tailwheel-equipped amateur-built airplane. During one of the high speed taxi runs the airplane inadvertently became airborne. The pilot stated that he attempted to land, but then decided to go airborne. He stated that he climbed to an altitude of about 3,000 feet and flew for approximately 40 minutes before returning to land. He stated that during the landing he was fast because he was attempting a wheel landing. He said that the airplane bounced and the airplane came back down hard. The airplane's retractable main landing gear collapsed and the airplane skidded to a stop on its belly. Examination of the airplane revealed that the eight landing gear attach bolts had pulled loose from the wing structure. The landing gear penetrated through the upper surface of the wing.

Factual narrative

The pilot reported that he was performing high speed taxi testing of his tail wheel equipped amateur-built airplane. During one of the high speed taxi runs the airplane inadvertently became airborne. The pilot stated that he attempted to land but then decided to go airborne. He stated that he climbed to an altitude of about 3,000 feet and flew for approximately 40 minutes before returning to land. He stated that during the landing he was fast because he was attempting a wheel landing. He said that the airplane bounced and the airplane came back down hard. The airplane's retractable main landing gear collapsed and the airplane skidded to a stop on its belly. Examination of the airplane revealed that the eight landing gear attach bolts had pulled loose from the wing structure. The landing gear penetrated through the upper surface of the wing.

Aircraft

Registration
N774A
Reported as
Ankerstar Bradley D RAND-ROBINSON KR2
Category
Airplane, amateur-built
Serial number
130
Engine
Volkswagen CONVERSION, 36 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Departed
HAO · Hamilton, OH
Destination
HAO · Hamilton, OH
Flight plan
Unknown
Airport
HAO · Butler County Regional Airport, runway 11, 5,500 × 100 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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
74
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Seat
Left
Flight hours
280 total · 1 in this make and model

Weather

Conditions
Visual (VMC) · Day

Docket · 1

The files NTSB released with the investigation on May 18, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 316 KB 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 N774A · 1

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