WPR11CA467

NTSB accident investigation · Robinson R22 Beta · Douglas, WY · September 24, 2011

Accident · No injuriesData collectionFinal report
Date
September 24, 2011, 16:00 local (22:00 UTC)
Place
Douglas, WY
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N3070SRobinson R22 Beta
Defining event
Maneuvering-hover: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report December 1, 2011
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20110924023609A
Case key
81897

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 yaw control of the helicopter while hover taxiing in gusty wind conditions.

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.

Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeRobinson Helicopter R22 BETA: 13 casesAll aircraft: 1,199 casesProbable cause
Performance/control parameters: yaw controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedRobinson Helicopter R22 BETA: 11 casesAll aircraft: 149 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

According to the pilot, while hover taxiing downwind, a gust of wind pushed the tail 90 degrees to the left, which forced the helicopter to descend into the pavement. The pilot reported that the front and rear crossover tubes between the left and right landing skid assemblies were bent, and that the tail cone was wrinkled at the fuselage attach points.

Factual narrative

According to the pilot, while hover taxiing downwind, a gust of wind pushed the tail 90 degrees to the left, which forced the helicopter to descend into the pavement. The pilot reported that the front and rear crossover tubes between the left and right landing skid assemblies were bent, and that the tail cone was wrinkled at the fuselage attach points.

Aircraft

Registration
N3070S
Reported as
Robinson R22 Beta (BETA)
Category
Helicopter
Serial number
4217
Airframe hours
1,031
Engine
Lycoming IO-360, 230 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
James P Hoeffler
Registered owner
James P Hoeffler
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 14, 2011 · 40 hours before
Departed
SHR · Sheridan, WY
Destination
DGW · Douglas, WY
Airport
DGW · Douglas Airport

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
51
Injuries
None
Certificate
Private
Medical
Class 3, With waivers/limitations
Last flight review
June 21, 2011
Seat
Right
Flight hours
901 total · 163 in this make and model · 636 as pilot in command · 68 in the last 90 days · 46 in the last 30 days · 7 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 15 knots, gusting 20
Visibility
10 statute miles
Lowest ceiling
None
Temperature
86 °F, dew point 34 °F
Altimeter
30.05 inHg
Observed at
DGW

Docket · 3

The files NTSB released with the investigation on October 26, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.1 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.