WPR12LA290

NTSB accident investigation · Burleigh Bearhawk · Heber City, UT · June 24, 2012

Accident · No injuriesLimited investigationFinal report
Date
June 24, 2012, 10:30 local (16:30 UTC)
Place
Heber City, UT
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N117ZBurleigh Bearhawk
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report September 5, 2013
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20120624011509A
Case key
84170

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 directional control during the landing roll, which resulted in a ground loop.

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotAll aircraft: 9,295 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedAll aircraft: 3,958 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.

Loss of control on groundLanding-landing rollAll aircraft: 4,585 casesDefining event

Analysis

The pilot reported that shortly after touchdown and during the landing roll, the airplane ground looped to the left. A postaccident examination of the landing gear system revealed no evidence of mechanical malfunction or failure that would have precluded normal operation.

Factual narrative

On June 24, 2012, about 1030 mountain daylight time, a Burleigh Bearhawk amateur built airplane, N117Z, ground looped during the landing roll at the Heber City Municipal Airport, Heber City, Utah. The pilot, who additionally owned the airplane, was operating it under the provisions of 14 Code of Federal Regulations (CFR) Part 91. The airline transport pilot and two passengers were not injured; the airplane sustained substantial damage. The local personal flight departed from Heber City about 1000. Visual meteorological conditions prevailed, and no flight plan had been filed. The pilot stated that after a 30-minute local flight he returned back to the airport to land. Shortly after touchdown and during the landing roll, the airplane ground looped to the left. The airplane sustained substantial damage to the left wing spar. The pilot further stated that he believed that he lost controllability due to a tailwheel malfunction. He noted that he had experienced prior problems with the tailwheel shimmying. A Federal Aviation Administration (FAA) airworthiness inspector performed an examination of the wreckage and found no evidence of mechanical malfunction or failure with the landing gear system. He noted that if there was some shimmy or it had spun around, it would still be possible to control the airplane. A routine aviation weather report (METAR) for Provo Municipal Airport, Provo, Utah, about 20 miles from the accident on a bearing of about 220 degrees, reported that the wind was from 100 degrees at 4 knots about 20 minutes after the accident.

Aircraft

Registration
N117Z
Reported as
Burleigh Bearhawk
Category
Airplane, amateur-built
Serial number
087-1039
Airframe hours
212
Engine
Lycoming O-540-A4D5, 250 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Edwin Thiel
Registered owner
M & E Adventures LLC
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · April 2, 2012 · 21 hours before
Departed
36U · Heber, UT
Destination
36U · Heber, UT
Airport
36U · Heber City Municipal Airport, runway 04, 6,899 × 75 ft, asphalt

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
55
Injuries
None
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
January 27, 2012
Seat
Right
Flight hours
15,816 total · 64 in this make and model · 8,166 as pilot in command · 96 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
100° at 4 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 37 °F
Altimeter
30.03 inHg
Observed at
PVU, 21 nm away

Docket · 2

The files NTSB released with the investigation on July 10, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.0 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.