DEN04LA130

NTSB accident investigation · Bell 206B3 · Atlantic City, WY · August 23, 2004

Accident · Serious injuriesLimited investigationFinal report
Date
August 23, 2004, 15:05 local (21:05 UTC)
Place
Atlantic City, WY
Injuries
2 serious, 2 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N2751UBell 206B3
Weather
Visual (VMC) · Day
Status
Completed · report January 24, 2005
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20040823019389A
Case key
59974

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 inability to maintain aircraft control, improper in-flight planning and decision making, and failure to compensate for wind conditions, resulting in collision with terrain. Contributing factors were the intentional low-level maneuver, and the wind shear conditions.

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.

Loss of control - in flightManeuvering - turn to reverse direction
Low altitude flight/maneuver - intentionalPilot in commandFactor
In-flight planning/decision - improperPilot in commandCause
Aircraft control - not possiblePilot in commandCause
Weather condition - windshearFactor
Compensation for wind conditions - inadequatePilot in commandCause
In flight collision with terrain/waterManeuvering
Terrain condition - high terrain
Terrain condition - open field

Analysis

According to the pilot, he was engaged in a filming operation. He had completed a "high groundspeed" pass and was slowing to approximately "20 mph" into the wind. At approximately 75 feet above the ground, and an airspeed of approximately 60 knots, the pilot continued to maneuver the helicopter around the leeward side of a small hill. During the maneuver, the helicopter encountered a sudden wind shear and a "15 to 20 knot tailwind." The pilot stated that the helicopter lost all response to control inputs, and he was unable to maintain altitude. The helicopter descended, struck the terrain and rolled over. The impact crushed the forward fuselage, separated the main rotor assembly, and buckled the tail boom.

Factual narrative

On August 23, 2004, at approximately 1505 mountain daylight time, a Bell 206B3, N2751U, operated by Hawkins and Powers Aviation, Inc., was substantially damaged when it struck high, rolling terrain while maneuvering near Atlantic City, Wyoming. Visual meteorological conditions prevailed at the time of the accident. The local flight was being conducted under the provisions of Title 14 CFR Part 91 without a flight plan. The commercial pilot and one passenger received serious injuries and two passengers received minor injuries. The flight originated at approximately 1415.

According to the pilot, he was engaged in a filming operation. He was completing a "high groundspeed" pass and was slowing to approximately "20 mph" into the wind. At approximately 75 feet above the ground, and an airspeed of approximately 60 knots, the pilot continued to maneuver the helicopter around the leeward side of a small hill. During the maneuver, the helicopter encountered a sudden wind shear and a "15 to 20 knot tailwind." The pilot stated that helicopter lost all response to control inputs, and he was unable to maintain altitude. The helicopter descended, struck the terrain and rolled over. The impact crushed the forward fuselage, separated the main rotor assembly, and buckled the tail boom.

At 1453, the recorded wind condition at Hunt Field (LND), Lander, WY, located approximately 23 nautical miles at 350 degrees, elevation 5586, was, 210 degrees at 15 knots, gusting to 18 knots.

Aircraft

Registration
N2751U
Reported as
Bell 206B3
Category
Helicopter
Serial number
2689
Airframe hours
11,866
Engine
Rolls-Royce 250-C20B, 430 horsepower, turbo shaft
Damage
Substantial damage
Flight
Business · Part 91
Registered owner
Hawkins and Powers Aviation Inc.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · July 2, 2004 · 68.8 hours before
Departed
LND · Atlantic City, WY
Destination
LND · Atlantic City, WY
Flight plan
Company VFR

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
57
Injuries
Serious
Certificate
Commercial
Instrument ratings
Helicopter
Medical
Class 2, Valid Medical--w/ waivers/lim
Last flight review
June 11, 2004
Seat
Right
Flight hours
16,280 total · 10,000 in this make and model · 13,000 as pilot in command · 60 in the last 90 days · 20 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
210° at 15 knots, gusting 18
Visibility
10 statute miles
Lowest ceiling
None
Temperature
64 °F, dew point 37 °F
Altimeter
29.82 inHg
Observed at
KLND, 23 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.