SEA04LA102

NTSB accident investigation · Bell 206B · Prosser, WA · June 9, 2004

Accident · No injuriesLimited investigationFinal report
Date
June 8, 2004, 18:50 local (Jun 9, 2004, 01:50 UTC)
Place
Prosser, WA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N213SDBell 206B
Weather
Visual (VMC) · Day
Status
Completed · report September 29, 2004
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20040608011019A
Case key
59408

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 with the power lines while maneuvering.

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

Analysis

During a right turn the helicopter's tail rotor became entangled in a power line. Pulling collective in an attempt to land on a road, the helicopter swung to the right and the main rotor struck another power line. As the pilot banked away from the second power line he seemed to gain some control of the aircraft before it impacted the ground. The helicopter came to rest in an upright position on its skids. No pre-accident anomalies with the helicopter were noted which would have precluded normal operations.

Factual narrative

On June 8, 2004, at 1850 Pacific daylight time, a Bell 206B helicopter, N213SD, was substantially damaged after impacting power lines while maneuvering near Prosser, Washington. The commercial pilot and his sole passenger were not injured. The helicopter, registered to Heliworks Inc., of Pensacola, Florida, was being operated in accordance with 14 CFR Part 91. Visual meteorological conditions prevailed at the time of the accident, and a flight plan was not filed. The helicopter had departed the Tri-Cities Airport, Pasco, Washington, at approximately 1800

In a telephone interview with the NTSB investigator-in-charge (IIC), and according to the Pilot/Operator Aircraft Accident Report (NTSB form 6120.1/2), the pilot reported that while conducting cherry drying operations he made a right turn and caught the tail rotor in a power line. The pilot further reported, "...about 30 seconds later a vibration occurred. I pulled collective to attempt a landing on a road, [and] as I pulled collective the ship immediately swung to the right and the main rotor struck a power line." The pilot stated that he then banked away from the power line and "seemed" to gain some control. "I saw an opening in the orchard and headed for [it]. The ship came to rest upright between the trees."

The pilot reported damage to the helicopter included the transmission being separated from the airframe and the tail rotor and tail rotor assembly being damaged. The pilot also reported to the IIC that no anomalies existed with the helicopter prior to the accident which would have precluded normal operations.

Aircraft

Registration
N213SD
Reported as
Bell 206B
Category
Helicopter
Serial number
3109
Airframe hours
17,000
Engine
Allison 250/C20, 250 horsepower, turbo shaft
Damage
Substantial damage
Flight
Other work use · Part 91
Registered owner
Heliworks Inc.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · April 1, 2004 · 60 hours before
Departed
PSC · Pasco, WA
Destination
Prosser, WA

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
56
Injuries
None
Certificate
Commercial
Medical
Class 2, Valid Medical--w/ waivers/lim
Last flight review
March 31, 2003
Seat
Rear
Flight hours
6,350 total · 236 in this make and model · 6,140 as pilot in command · 100 in the last 90 days · 30 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
340° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
63 °F, dew point 55 °F
Altimeter
29.90 inHg
Observed at
PSC, 27 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.