SEA05CA086

NTSB accident investigation · Williams Helicopter UH-1B · Uniontown, WA · April 25, 2005

Accident · No injuriesData collectionFinal report
Date
April 25, 2005, 09:40 local (16:40 UTC)
Place
Uniontown, WA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N334WNWilliams Helicopter UH-1B
Weather
Visual (VMC) · Day
Status
Completed · report September 13, 2005
Report
Approved by Office Director
FAA report
20050425035029A
Case key
61358

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 clearance from an object while maneuvering, which resulted in the main rotor blades striking a power pole. The power pole was a factor in the accident.

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 objectManeuvering - aerial application
Object - poleFactor
Clearance - not maintainedPilot in commandCause

Analysis

In a written statement the pilot reported that he was conducting spray operations, under power lines, when the helicopter was "hit" with a gust of wind that was sufficient enough to "push the helicopter" toward a series of power poles. The pilot further stated that he was unable to correct his flight path and the helicopter's main rotor blade subsequently impacted a power pole resulting in substantial damage.

Factual narrative

On April 25, 2005, about 0940 Pacific daylight time, a restricted category Williams UH-1B helicopter (formally a Bell UH-1B), N334WN, sustained substantial damage following a main rotor blade strike during an aerial application operation near Uniontown, Washington. The helicopter is registered to Leading Edge Aviation of Lewiston, Idaho, and was being operated as a visual flight rules (VFR) agricultural flight under the provisions of Title 14, CFR Part 137, when the accident occurred. The commercial pilot, the sole occupant of the helicopter, was not injured. Visual meteorological conditions prevailed. A company flight plan was in effect for the local flight that originated in Uniontown approximately 15 minutes prior to the accident.

In a written statement dated April 20, the pilot reported that he was conducting spray operations, under power lines, when the helicopter was "hit" with a gust of wind that was sufficient enough to "push the helicopter" toward a series of power poles. The pilot further stated that he was unable to correct his flight path and the helicopter's main rotor blade subsequently impacted a power pole resulting in substantial damage.

Aircraft

Registration
N334WN
Reported as
Williams Helicopter UH-1B
Category
Helicopter
Serial number
62-2097
Engine
Lycoming T53, turbo shaft
Damage
Substantial damage
Flight
Part 137
Operator
Leading Edge Aviat, doing business as Same
Registered owner
Pope, Jim Dean
Airworthiness certificate
Special, Restricted (Special)
Departed
Uniontown, WA
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
42
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2
Flight hours
9,445 total · 2,100 in this make and model · 397 in the last 90 days · 67 in the last 30 days

Weather

Conditions
Visual (VMC) · Day

FAA reports on this event · 1

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