CEN16LA161

NTSB accident investigation · Bell 47G-2A · Los Fresnos, TX · April 21, 2016

Accident · Serious injuriesLimited investigationFinal report
Date
April 21, 2016, 11:12 local (16:12 UTC)
Place
Los Fresnos, TX
Injuries
1 serious
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N64702Bell 47G-2A
Defining event
Maneuvering-low-alt flying: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report May 1, 2017
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA Flight Standards District Office
FAA report
20160421008359A
Case key
93052

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot's inability to see and avoid the power lines because of trees obscuring his view.

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.

Object/animal/substance: wireEnvironmental issues › Physical environment · Contributed to outcomeBell 47G-2A: 2 casesAll aircraft: 588 casesProbable cause

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 operator, the commercial pilot of the helicopter was performing an aerial application flight when the helicopter struck a set of power lines that ran perpendicular to the field being sprayed. The operator stated that the lines were obscured due to trees.

Factual narrative

On April 21, 2016, about 1112 central daylight time, a Bell 47G-2A, N64702, collided with power lines, impacted terrain, and caught fire near Los Fresnos, Texas. The pilot, the sole occupant on board, was seriously injured. The helicopter was destroyed. The helicopter was registered to and operated by Hendrickson Flying Service, Inc, Rochelle, Illinois, under the provisions of 14 Code of Federal Regulations Part 137 as an aerial application flight. Visual meteorological conditions prevailed at the time of the accident, and no flight plan had been filed. The local flight originated from Weslaco, Texas, at an undetermined time.The following account of the accident is based up a report submitted by the operator because the pilot was seriously injured and was in the hospital: The pilot was spraying a cotton field between two sets of power lines that ran parallel to his flight path. The helicopter struck a third set of power lines that ran perpendicular to the field being sprayed. The power lines were obscured by trees. A ground fire erupted after the accident, resulting in the helicopter being destroyed.

Aircraft

Registration
N64702
Reported as
Bell 47G-2A
Category
Helicopter
Serial number
2706
Built
1962
Airframe hours
12,920
Engine
Lycoming VO-435-A2F, 260 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Aerial application · Part 137
Operator
Hendrickson Flying Service, Inc.
Registered owner
Hendrickson Flying Service, Inc.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · March 14, 2016
Departed
Weslaco, TX
Destination
Weslaco, TX
Equipment
Onboard weather, Data recorder, Handheld GPS

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
61
Injuries
Serious
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Helicopter, Airplane
Medical
Class 2, With waivers/limitations
Seat
Left
Restraint
4-point
Flight hours
5,605 total · 120 in this make and model · 5,284 as pilot in command · 20 in the last 90 days · 18 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
150° at 9 knots
Visibility
10 statute miles
Lowest ceiling
3,400 ft broken
Temperature
82 °F, dew point 72 °F
Altimeter
29.92 inHg
Observed at
KMFE, 51 nm away

Docket · 3

The files NTSB released with the investigation on March 23, 2017, 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.