ANC03LA015

NTSB accident investigation · Bell 206B · Kingman, AZ · November 15, 2002

Accident · FatalLimited investigationFinal report
Date
November 15, 2002, 16:30 local (23:30 UTC)
Place
Kingman, AZ
Injuries
1 fatal
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N16962Bell 206B
Weather
Visual (VMC) · Day
Status
Completed · report November 25, 2003
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA Las Vegas FSDO
FAA report
20021115032209A
Case key
56078

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 altitude/clearance from obstacles during cruise flight, which resulted in the helicopter striking a transmission line, and subsequently the ground.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight collision with objectCruise
Altitude/clearance - not maintainedPilot in commandCause
Object - wire,transmission
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground

Analysis

The private pilot was making a cross country flight in the helicopter in visual meteorological conditions. A sergeant for the sheriff's office said his office received a cellular telephone call from a motorist, advising of the helicopter accident. He said when he arrived at the accident site, he saw a debris field about 50 yards long perpendicular to a line of power poles. He said the poles were about 60 feet high, and two power lines were stretched between each pole, with the top line about 4 feet above the lower line. He said the site was in a fairly remote area of the desert, and that the power lines terminated at a ranch several miles from the accident site. He said the lower power line appeared to have been cut by the helicopter between two of the poles, and the top power line was intact. The sergeant said the owner of the ranch at the end of the power line reported a power failure about 1630. An FAA aviation safety inspector, who responded to the accident site, said the wreckage was scattered along a path about 50 yards long in the direction of the helicopter's destination. He said it appeared the helicopter, on a general heading of south, crossed perpendicular to a road and power lines, and impacted the ground about 50 yards south of the power lines. He said there was no large impact crater, and that all the major components of the helicopter were located at the accident site. He said the helicopter came to rest on its left side. The main rotor system was intact, and one main rotor blade had little or no damage. The second main rotor blade exhibited impact damage and striations starting about 4 feet from the hub on the leading edge, which he said were consistent with cutting the power line. The second blade also had span-wise flex folding along the trailing edge.

Factual narrative

On November 15, 2002, about 1630 mountain standard time, a Bell 206B helicopter, N16962, sustained substantial damage during an in-flight collision with terrain after striking a power line about 15 miles northwest of Kingman, Arizona. The helicopter was being operated as a visual flight rules (VFR) personal flight under Title 14, CFR Part 91, when the accident occurred. The solo private pilot sustained fatal injuries. Visual meteorological conditions prevailed, and no flight plan was filed. The flight originated at Saint George Municipal Airport, Saint George, Utah, about 1530, and was bound for Lake Havasu City, Arizona.

During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on November 15, a sergeant for the Mohave County Sheriff's Office said his office received a cellular telephone call from a motorist, advising of the helicopter accident. He said when he arrived at the accident site, he saw a debris field about 50 yards long perpendicular to a line of power poles. He said the poles were about 60 feet high, with two power lines stretched between each pole. He said the site was in a fairly remote area of the desert, and that the power lines terminated at a ranch several miles from the accident site. He said the two power lines were stacked vertically on the poles, and the top line was about 4 feet above the lower line. He said the lower power line appeared to have been cut by the helicopter between two of the poles, and the top power line was intact. The sergeant said the owner of the ranch at the end of the power line reported a power failure about 1630.

During a telephone conversation with the IIC on November 16, an FAA aviation safety inspector (ASI) from the Las Vegas Flight Standards District Office (FSDO), who responded to the accident site, said the wreckage was scattered along a path about 50 yards long in the direction of Lake Havasu, the helicopter's destination. He said it appeared the helicopter, on a general heading of south, crossed perpendicular to a road and power lines, and impacted the ground about 50 yards south of the power lines. The ASI said there was no large impact crater, and that all the major components of the helicopter were located at the accident site. He said the helicopter came to rest on its left side, that the main rotor system was intact, and that one main rotor blade had little or no damage. The second main rotor blade exhibited impact damage, and striations starting about 4 feet from the hub on the leading edge, which he said were consistent with cutting the power line. The second blade also had span-wise flex folding along the trailing edge.

According to FAA records the pilot had extensive flying experience in fixed wing airplanes, but the helicopter was a recent acquisition. The pilot did attend a manufacturer's flight training program, and had acquired about 170 hours of flight time in helicopters.

During a telephone conversation with the IIC on August 5, 2003, the pathologist from the Mohave County Coroner's Office in Arizona, said the official report was not yet transcribed, but according to the doctor's notes, the pilot died from multiple blunt force trauma resulting from the accident.

A toxicology report prepared by the FAA Aeronautical Center in Oklahoma City, Oklahoma, detected Amlodipine in the pilot's blood and urine. Amlodipine is a drug routinely used to control high blood pressure. The use of Amlodipine was not documented in any of the pilot's FAA medical records.

Aircraft

Registration
N16962
Reported as
Bell 206B
Category
Helicopter
Serial number
2362
Engine
Allison 250 SER, 400 horsepower, turbo shaft
Damage
Substantial damage
Flight
Personal · Part 91
Operator
John McCoy
Registered owner
Helicopter Technology Inc.
Airworthiness certificate
Standard, Normal
Departed
SGU · Saint George, UT
Destination
HII · Lake Havasu Cty, AZ

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
60
Injuries
Fatal
Certificate
Private
Airplane ratings
Multi-engine land, Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Last flight review
June 20, 2002
Toxicology
Performed
Flight hours
4,900 total · 105 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 11 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
61 °F, dew point 19 °F
Altimeter
30.29 inHg
Observed at
KIGM, 15 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N16962 · 2

Matched to the same aircraft by N-number and date.