CEN17CA346

NTSB accident investigation · Robinson Helicopter R44 II · Logan, IA · July 20, 2017

Accident · Minor injuriesData collectionFinal report
Date
July 20, 2017, 10:00 local (15:00 UTC)
Place
Logan, IA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N192ERobinson Helicopter R44 II
Defining event
Maneuvering-low-alt flying: Low altitude operation/event
Weather
Visual (VMC) · Day
Status
Completed · report November 14, 2017
Report
Approved by Office Director
NTSB office
Central Region
Parties
Federal Aviation Administration
FAA report
20170720012559A
Case key
95988

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 clearance from a wire during an agricultural application flight.

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 II: 39 casesAll aircraft: 1,310 casesProbable cause
Object/animal/substance: wireEnvironmental issues › Physical environment · Effect on equipmentRobinson Helicopter R44 II: 26 casesAll aircraft: 588 cases
Object/animal/substance: wireEnvironmental issues › Physical environment · Awareness of conditionRobinson Helicopter R44 II: 26 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 commercial pilot was performing an agricultural application flight and completed two reconnaissance passes and orbits of the field he was about to spray. The pilot reported that he did not see any power lines that posed a danger for the flight. While maneuvering at a low altitude during a pass turn, the helicopter struck a wire that the pilot did not see. After the helicopter struck the wire, the helicopter windscreen failed, and the helicopter violently shook. The pilot entered an autorotation to the field, and the helicopter impacted terrain and came to rest on its right side. The helicopter sustained substantial damage to the fuselage, tailboom, and main rotor blades. The pilot reported no mechanical failures or malfunctions of the helicopter.

Factual narrative

The commercial pilot was performing an agricultural application flight, and completed two reconnaissance passes and orbit of the field he was about to spray. The pilot did not note any power lines that posed a danger for the flight. While maneuvering at a low altitude during a pass turn, the helicopter struck a wire that he did not see. After the helicopter struck the wire, the helicopter windscreen failed and the helicopter violently shook. The pilot entered an autorotation to the field, and the helicopter impacted terrain and came to rest on its right side. The helicopter sustained substantial damage to the fuselage, tail boom, and main rotor blades. The pilot reported no mechanical failures or malfunctions of the helicopter. The accident was reported to the National Transportation Safety Board on September 11, 2017.

Aircraft

Registration
N192E
Reported as
Robinson Helicopter R44 II (II)
Category
Helicopter
Serial number
10989
Built
2005
Engine
Lycoming IO-540, 225 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Airbourn Aviation LLC
Registered owner
Midwest Airspray LLC
Airworthiness certificate
Special, Restricted (Special)
Equipment
None

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
Certificates
Flight instructor, Commercial
Instrument ratings
Helicopter
Medical
Class 2, Without waivers/limitations
Last flight review
April 21, 2016
Seat
Right
Restraint
4-point
Flight hours
1,302 total · 643 in this make and model · 1,259 as pilot in command · 108 in the last 90 days · 33 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
100° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
91 °F, dew point 75 °F
Altimeter
29.95 inHg
Observed at
TQE, 20 nm away

Docket · 1

The files NTSB released with the investigation on October 12, 2017, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.9 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.