CEN18LA183

NTSB accident investigation · Hughes 369A · Stoneburg, TX · May 19, 2018

Accident · Serious injuriesLimited investigationFinal report
Date
May 19, 2018, 09:45 local (14:45 UTC)
Place
Stoneburg, TX
Injuries
4 serious
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N369GKHughes 369A
Defining event
Maneuvering-low-alt flying: Low altitude operation/event
Weather
Visual (VMC) · Day
Status
Completed · report April 30, 2019
Report
Approved by Office Director
NTSB office
Central Region
Parties
AVP-100, Flight Standards District Office
FAA report
20180519010739A
Case key
97283

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 unsafe and aggressive operation of the helicopter at low altitude, which resulted in impact with trees.

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.

Action: incorrect action performancePersonnel issues › Action/decision · PilotHughes 369A: 1 caseAll aircraft: 1,386 casesProbable cause
Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedHughes 369A: 1 caseAll aircraft: 1,310 casesProbable cause
Object/animal/substance: tree(s)Environmental issues › Physical environment · Effect on operationHughes 369A: 2 casesAll aircraft: 933 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

The commercial pilot was conducting an aerial tour flight to hunt hogs in the helicopter with four passengers on board. As the pilot was returning to the landing zone and the helicopter was about 125 ft above the ground, a passenger saw a coyote below the helicopter and reported it to the other occupants. The pilot then chose to chase the coyote and suddenly made a tight, right turn and then entered a steep descent, which resulted in the helicopter rapidly approaching a tree line; the pilot initiated a climb, but the helicopter impacted the trees and then terrain. Postaccident examination of the helicopter revealed no evidence of any preimpact mechanical malfunctions or failures that would have precluded normal operation. The pilot was operating the helicopter unsafely at a low altitude, which likely resulted in him seeing the tree line ahead too late to avoid impact with the trees.

Factual narrative

On May 19, 2018, about 0930 central daylight time, a Hughes 369A helicopter, N369GK, struck trees and impacted terrain about 4 miles north of Stoneburg and 8 miles north of Bowie, Texas.. The pilot and three passengers were seriously injured, and the helicopter was destroyed. The helicopter was registered to Longhorn Helicopters and operated by Hogbirds under the provisions of Title 14 Code of Federal Regulations Part 91 as an aerial tour flight. Visual meteorological conditions prevailed at the accident site, and no flight plan had been filed. The flight was part of a guided hog hunt on private property for military veterans. There were four occupants on board: the pilot in the right front seat, the navigator in the left front seat, and two passengers in the rear acting as shooters. According to a passenger, who was seated in the front left seat and was acting as a navigator during the flight, the flight had completed a hunt and a call had been made to safe the weapons. Subsequently, the flight started to return to the landing zone. While flying about 125 feet above the ground a passenger spotted a coyote below the helicopter and notified the rest of the occupants. The pilot made a sudden tight right turn and entered a steep descent downwind to chase the coyote. The flight crossed a road and dropped into the middle of a wheat field. The flight rapidly approached a tree line and the pilot initiated a climb, but the helicopter collided with trees and impacted terrain. The navigator was able to extricate himself from the helicopter and went for help. The pilot and passengers were taken to hospitals with serious injuries. The navigator was taken to a hospital with minor injuries. The navigator did not report any mechanical malfunction of the helicopter prior to the accident. Neither the pilot or operator submitted a statement to FAA or NTSB.

Aircraft

Registration
N369GK
Reported as
Hughes 369A (NO SERIES)
Category
Helicopter
Serial number
580468
Built
1967
Engine
Allison 250-C18A, 317 horsepower, turbo shaft
Damage
Destroyed
Flight
Business · Part 91
Airworthiness certificate
Standard, Normal
Departed
NONE · Sunset, TX
Destination
NONE · Sunset, TX
Equipment
Unknown

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
42
Injuries
Serious
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Helicopter
Medical
Class 2, With waivers/limitations
Seat
Right
Restraint
3-point
Flight hours
608 total · 100 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
160° at 14 knots, gusting 21
Visibility
10 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 66 °F
Altimeter
29.85 inHg
Turbulence
Unknown
Observed at
0F2, 5 nm away

Docket · 3

The files NTSB released with the investigation on February 21, 2019, on NTSB’s docket system: statements, records, photos and specialists’ reports. 991 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.