CEN14CA403

NTSB accident investigation · Robinson Helicopter R44 · Allen, NE · July 31, 2014

Accident · Minor injuriesData collectionFinal report
Date
July 31, 2014, 14:30 local (19:30 UTC)
Place
Allen, NE
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N7194HRobinson Helicopter R44
Defining event
Maneuvering-low-alt flying: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report October 9, 2014
Report
Approved by Office Director
NTSB office
Central Region
Parties
Federal Aviation Administration
FAA report
20140731012769A
Case key
89790

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 ensure sufficient obstacle clearance for potential wind conditions, which resulted in his loss of control of the helicopter.

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: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedRobinson Helicopter R44: 22 casesAll aircraft: 1,310 casesProbable cause
TurbulenceEnvironmental issues › Conditions/weather/phenomena · Response/compensationRobinson Helicopter R44: 1 caseAll aircraft: 92 cases
Object/animal/substance: wireEnvironmental issues › Physical environment · Contributed to outcomeRobinson Helicopter R44: 18 casesAll aircraft: 588 cases

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 helicopter pilot was conducting an agricultural spray operation to a sloped field with several hills and valleys. As he approached a set of midfield power lines on about his fortieth pass, the pilot encountered stronger winds with significant turbulence and lost control of the helicopter. The helicopter struck a guy-wire for the midfield power lines and subsequently impacted the ground nose first.

Factual narrative

The helicopter pilot was conducting an agricultural spray operation to a sloped field with several hills and valleys. As he approached a set of midfield power lines on about his fortieth pass, the pilot encountered stronger winds with significant turbulence and lost control of the helicopter. The helicopter struck a guy-wire for the midfield power lines and subsequently impacted the ground nose first.

Aircraft

Registration
N7194H
Reported as
Robinson Helicopter R44 (UNDESIGNAT)
Category
Helicopter
Serial number
0941
Built
2000
Airframe hours
4,466
Engine
Lycoming 0-540F1 SERIE, 260 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Shenandoah Agricultrual Spray Service In
Registered owner
Shenandoah Agricultrual Spray Service In
Airworthiness certificate
Special, Restricted (Special); Standard, Normal
Last inspection
100 hour · July 9, 2014
Departed
Priv · Sioux City, IA
Destination
Priv · Sioux City, IA

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
56
Injuries
Minor
Certificates
Airline transport, Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
April 24, 2014
Seat
Right
Restraint
3-point
Flight hours
5,161 total · 175 in this make and model · 4,880 as pilot in command · 120 in the last 90 days · 63 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 8 knots
Visibility
10 statute miles
Lowest ceiling
7,000 ft overcast
Temperature
82 °F, dew point 61 °F
Altimeter
30.05 inHg
Observed at
KLCG, 12 nm away

Docket · 1

The files NTSB released with the investigation on October 2, 2014, on NTSB’s docket system: statements, records, photos and specialists’ reports. 999 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.