CEN13CA017

NTSB accident investigation · Hunthrop Autogyro MTO Sport · Bourland, TX · October 20, 2012

Accident · Serious injuriesData collectionFinal report
Date
October 20, 2012, 11:45 local (16:45 UTC)
Place
Bourland, TX
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N589DHHunthrop Autogyro MTO Sport
Defining event
Takeoff: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report April 10, 2013
Report
Approved by Office Director
NTSB office
Central Region
FAA report
20121020028999A
Case key
85384

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 decision to fly the gyroplane in gusty wind conditions that exceeded his limitations and his resultant loss of control during takeoff.

Findings · 4

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: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedWilliam D Hunthrop AUTOGYRO MTO SPORT: 1 caseAll aircraft: 3,958 casesProbable cause
Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Effect on operationWilliam D Hunthrop AUTOGYRO MTO SPORT: 1 caseAll aircraft: 1,199 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 private pilot, who had 10 hours of dual instruction and 1.5 hours of solo flight in the gyroplane make and model, was performing touch-and-go landings in the gyroplane in pursuit of a gyroplane endorsement when the gyroplane impacted terrain during a takeoff, and the fuselage was substantially damaged. The pilot could not recall the accident sequence. The wind at the time of the accident was from 190 degrees at 19 knots gusting to 27 knots. Documentation showed that the pilot had been signed off by his flight instructor to operate the gyroplane solo in wind up to 9 knots. A visual examination of the gyroplane did not reveal any preimpact anomalies that would have precluded normal operation. Based on the information available, it is likely the pilot did not maintain directional control while taking off in the gyroplane in strong, gusty wind conditions.

Factual narrative

While performing touch-and-go training, the gyrocraft impacted terrain during a takeoff from the runway. The gyroplane's fuselage was substantially damaged. The Federal Aviation Administration inspector reported that the solo private pilot sustained a broken arm and a concussion; the pilot could not recall the accident sequence. In addition, the pilot was training to obtain a gyrocraft endorsement and had been signed off by his flight instructor to operate solo in winds up to 9 knots. Winds at the time of the accident were 20 degrees from runway heading at 19 knots gusting to 27 knots. At the time of the accident, the pilot had accumulated about 271 hours total time with 10 hours dual and 1.5 hours solo in make and model. A visual examination of the gyrocraft did not reveal any preimpact anomalies.

Aircraft

Registration
N589DH
Reported as
Hunthrop Autogyro MTO Sport
Category
Gyroplane, amateur-built
Serial number
M0098
Engine
Rotax 912ULS, 100 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Hunthrop William D
Registered owner
Hunthrop William D
Airworthiness certificate
Special, Experimental (Special)
Departed
K50F · Bourland, TX
Destination
K50F · Bourland, TX
Airport
K50F · Bourland Field, runway 17, 4,049 × 60 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
60
Injuries
Serious
Certificates
Private, Sport Pilot
Airplane ratings
Single-engine land
Medical
Sport pilot
Flight hours
271 total · 11 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
190° at 19 knots, gusting 27
Visibility
10 statute miles
Lowest ceiling
None
Temperature
73 °F, dew point 59 °F
Altimeter
29.87 inHg
Observed at
KFWS, 14 nm away

Docket · 1

The files NTSB released with the investigation on February 25, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 25 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.