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Aviation safety reports, made easier to study

NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

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NTSB Report

June 11, 2009 · Hiller UH-12E · N34SD

Stringtown, OK

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
June 11, 2009
Injury Outcomes
No injuries (1 uninjured)
Location
Stringtown, OK
Aircraft
Hiller UH-12E
Tail Number
N34SD
Operator
Texas Air Cargo
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CEN09CA359

The company's president reported that the helicopter pilot was "taking off from an area with large bushes and scrubby trees about 500 feet ahead. He believed he was somewhat distracted because of learning of the serious illness of his mother. ...When it appeared he might have difficulty clearing the obstacles to the left, he turned right to pass under the power lines. The tail rotor snagged the lower power line, causing the helicopter to impact the ground... The wreckage remained intact except for portions of the tail rotor and main rotor which broke off after impact." An unidentified witness reported that the helicopter had struck "lines" while conducting agricultural operations, and that the helicopter was "shattered" and "totaled." The caller stated that the helicopter wreckage had been recovered and relocated to Mineral Wells, Texas.

NTSB Probable Cause

The pilot's failure to maintain clearance from power lines. Contributing to the accident was the pilot's preoccupation with personal affairs.

Full Narrative

The company's president reported that the pilot was "taking off from an area with large bushes and scrubby trees about 500 feet ahead. He believed he was somewhat distracted because of learning of the serious illness of his mother. ...When it appeared he might have difficulty clearing the obstacles to the left, he turned right to pass under the power lines. The tail rotor snagged the lower power line, causing the helicopter to impact the ground... The wreckage remained intact except for portions of the tail rotor and main rotor which broke off after impact." An unidentified witness reported that the helicopter had struck "lines" while conducting agricultural operations, and that the helicopter was "shattered" and "totaled." The caller stated that the helicopter wreckage had been recovered and relocated to Mineral Wells, Texas.

Flight

Event TypeAccident
Event Time07:40 CDT
Nearest Airport0nm
Flight Plan FiledNone
Flight Plan ActivatedUnknown
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftHiller UH-12E
Tail NumberN34SD
Aircraft CategoryHeli
DamageSubstantial
OperatorTexas Air Cargo
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · VO-540-B1A · Reciprocating · 305
Seats3

People & Injuries

Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 61 · Second Class · None

Conditions

ConditionsIMC
LightDaylight
WindCalm
Visibility10 sm
CeilingNone
Altimeter30.09 inHg
Observation Time12:14
Weather SourceWFAC

Appendix: Source Data