ANC08LA127

NTSB accident investigation · Bell Helicopter Textron 206L-1 · Homer, AK · September 26, 2008

Accident · Serious injuriesLimited investigationFinal report
Date
September 25, 2008, 16:15 local (Sep 26, 2008, 00:15 UTC)
Place
Homer, AK
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N305MHBell Helicopter Textron 206L-1
Defining event
Initial climb: External load event (Rotorcraft)
Weather
Visual (VMC) · Day
Status
Completed · report April 15, 2009
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA
FAA report
20080925848489A
Case key
69170

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 power lines during an external load lift. Contributing to the accident was the pilot's lack of situational awareness.

Findings · 3

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.

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 airline transport helicopter pilot was assisting an electric utility company in positioning personnel and equipment under 14 Code of Federal Regulations Part 135. While lifting an external load, he reported that he had completed the hovering long-line hookup, but forgot that he was directly under high tension power lines. He said that as he started to extend the line the main rotor blades contacted and severed the power lines. The pilot said that his next memory was being on the ground looking at the wreckage. He said the helicopter was operating normally until he contacted the wires. The helicopter sustained damage to the fuselage and rotor system.

Factual narrative

On September 25, 2008, about 1615 Alaska daylight time, a Bell 206L-1 helicopter, N305MH, sustained substantial damage when it collided with power lines about 21 miles northeast of Homer, Alaska. The helicopter was being operated by Maritime Helicopters, Homer, as a visual flight rules (VFR) external load flight in conjunction with a local public utilities contract under Title 14, CFR Part 133, when the accident occurred. The solo airline transport pilot received serious injuries. Visual meteorological conditions prevailed, and company flight following procedures were in effect. In a written statement dated October 15, the pilot reported that he completed the hover hookup of a long line, and forgot he was directly under high tension power lines. He said he started to lift the line when the main rotor blades contacted and severed the power lines. He reported that his next memory was being on the ground looking at the helicopter wreckage. He said that all helicopter operations were normal until contact with the wires. The helicopter sustained damage to the fuselage and rotor system.

Aircraft

Registration
N305MH
Reported as
Bell Helicopter Textron 206L-1
Category
Helicopter
Serial number
45386
Airframe hours
22,274
Engine
Allison 250 SER 250HP, 250 horsepower, turbo shaft
Damage
Substantial damage
Flight
Part 135
Operator
Maritime Helicopters Inc, doing business as Maritime Helicopter
Registered owner
Maritime Helicopters Inc
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · September 5, 2008
Departed
Homer, AK
Destination
Homer, AK
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.

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None

FAA reports on this event · 1

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