CEN15CA153

NTSB accident investigation · Robinson Helicopter R22 Beta · Asherton, TX · February 15, 2015

Accident · Minor injuriesData collectionFinal report
Date
February 15, 2015, 10:30 local (16:30 UTC)
Place
Asherton, TX
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N7181SRobinson Helicopter R22 Beta
Defining event
Maneuvering-low-alt flying: Low altitude operation/event
Weather
Visual (VMC) · Day
Status
Completed · report May 13, 2015
Report
Approved by Office Director
NTSB office
Central Region
FAA report
20150215003939A
Case key
90782

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 did not maintain adequate clearance from the trees.

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

According to the pilot, he was herding cattle with the helicopter. He descended to an altitude of about 10 feet to get the cattle to turn and enter a pen. After the cattle entered the pen, he maneuvered away and gained altitude to clear some nearby trees. The pilot thought the helicopter was clear of the trees; however, the tailrotor impacted a tree. The helicopter started to spin, so he reduced the throttle to stop the spin. The helicopter impacted terrain, resulting in substantial damage the main rotor blades, fuselage, and tailboom.

Factual narrative

According to the pilot, he was herding cattle with the helicopter. He descended to an altitude of about 10 feet to get the cattle to turn and enter a pen. After the cattle entered the pen, he maneuvered away and gained altitude to clear some nearby trees. The pilot thought the helicopter was clear of the trees; however, the tailrotor impacted a tree. The helicopter started to spin, so he reduced the throttle to stop the spin. The helicopter impacted terrain, resulting in substantial damage the main rotor blades , fuselage, and tailboom.

Aircraft

Registration
N7181S
Reported as
Robinson Helicopter R22 Beta (BETA)
Category
Helicopter
Serial number
3008
Built
1999
Engine
Lycoming O&VO-360 SER, reciprocating
Damage
Substantial damage
Flight
Other work use · Part 91
Operator
Southwest Texas Helicopters, Inc
Registered owner
Graff Fred L II
Airworthiness certificate
Standard, Normal
Departed
Asherton, TX
Destination
Asherton, TX

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
30
Injuries
Minor
Certificate
Commercial
Instrument ratings
Helicopter
Medical
Class 2, Without waivers/limitations
Seat
Right
Restraint
3-point
Flight hours
2,613 total · 2,481 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
61 °F

Docket · 2

The files NTSB released with the investigation on May 7, 2015, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.3 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.