CEN24LA043

NTSB accident investigation · Bearhawk Four · Eau Claire, WI · November 21, 2023

Accident · No injuriesClass 4 · LimitedFinal report
Date
November 21, 2023, 10:00 local (16:00 UTC)
Place
Eau Claire, WI · grassy area adjacent to runway 32
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N274LCBearhawk Four
Defining event
Landing-landing roll: Loss of control on ground
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
FAA
FAA report
20231121017059A
Case key
193412

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 failure to maintain directional control during landing.

Findings · 2

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

During the landing roll, the tailwheel-equipped airplane bounced once then veered to the left. The pilot applied right rudder but was unable to maintain directional control. The airplane exited the runway and ground looped, which resulted in separation of the right main landing gear and substantial damage to the right wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N274LC
Reported as
Bearhawk Four
Category
Airplane, amateur-built
Serial number
68
Built
2023
Airframe hours
2
Engine
Lycoming O-540-B2B5, 235 horsepower, reciprocating
Damage
Substantial damage
Flight
Flight test · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · November 14, 2023
Departed
EAU · Eau Claire, WI
Destination
Same as departure
Airport
EAU · Chippewa Valley Regional Airport, runway 32, 5,000 × 100 ft, asphalt
Equipment
Electronic primary flight display, Satellite tracking device, Stall warning system, ADS-B, Angle of attack indicator, Auto-pilot, Electronic multifunction display

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
71
Injuries
None
Certificates
Commercial, Flight instructor, Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
January 24, 2023
Seat
Right
Restraint
5-point
Flight hours
3,555 total · 2 in this make and model · 3,555 as pilot in command · 42 in the last 90 days · 15 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
340° at 5 knots
Visibility
10 statute miles
Lowest ceiling
2,200 ft overcast
Temperature
39 °F, dew point 30 °F
Altimeter
30.02 inHg
Observed at
KEAU
METAR
KEAU 211609Z 34005KT 10SM OVC022 04/M01 A3002 RMK AO2 T00391011

Docket · 2

The files NTSB released with the investigation on April 19, 2024, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.2 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.