N97UP

Substantial
None

ROBINSON HELICOPTER R44S/N: 0237

Accident Details

Date
Monday, August 14, 2017
NTSB Number
GAA17CA491
Location
Westby, WI
Event ID
20170816X75406
Coordinates
43.660278, -90.861114
Aircraft Damage
Substantial
Highest Injury
None
Fatalities
0
Serious Injuries
0
Minor Injuries
0
Uninjured
1
Total Aboard
1

Probable Cause and Findings

The pilot's failure to see and avoid power lines while maneuvering at low altitude.

Aircraft Information

Registration
Make
ROBINSON HELICOPTER
Serial Number
0237
Engine Type
Reciprocating
Year Built
1996
Model / ICAO
R44R44
Aircraft Type
Rotorcraft
No. of Engines
1
Seats
4
FAA Model
R44

Registered Owner (Current)

Name
MF HELICOPTERS LLC
Address
N8280 HILLBURN MILL RD
City
EAST TROY
State / Zip Code
WI 53120-2438
Country
United States

Analysis

The helicopter pilot reported that, during an aerial application flight, he performed a "high recon [reconnaissance]" pass over the field and observed houses, tree lines, and power lines surrounding the field. He added that he descended for the first pass, about 70 mph and 100 to 150 ft. above ground, and as he approached the end of the field, he "suddenly became aware of two [additional] large power lines stretched out in front of [him] at eye level and closing fast." He further added that, he "instinctively pulled up on the collective and back on the cyclic" and the fuselage cleared the wire, but suddenly there was a "violent lurch" when the tail rotor contacted the wire. Subsequently, the helicopter started to "spin out of control," the pilot braced for impact, and the helicopter impacted the terrain.

The fuselage, tail boom, and main rotor sustained substantial damage.

The pilot reported that there were no preaccident mechanical malfunctions or failures with the helicopter that would have precluded normal operation.

Data Source

Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# GAA17CA491