WPR21LA338

NTSB accident investigation · Bell 206L-3 · Tillamook, OR · September 8, 2021

Accident · No injuriesClass 4 · LimitedFinal report
Date
September 8, 2021, 11:00 local (18:00 UTC)
Place
Tillamook, OR
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N6516KBell 206L-3
Defining event
Maneuvering-low-alt flying: Low altitude operation/event
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Western Pacific Region
Parties
FAA
FAA report
20210908013049A
Case key
103825

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot's failure to maintain clearance from a powerline during a low reconnaissance, with sun glare.

Findings · 5

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.

Object/animal/substance: wireEnvironmental issues › Physical environment · Effect on equipmentBell 206L-3: 4 casesAll aircraft: 588 cases
Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedBell 206L-3: 6 casesAll aircraft: 1,310 casesProbable cause
Light condition: glareEnvironmental issues › Conditions/weather/phenomena · Effect on operationBell 206L-3: 2 casesAll aircraft: 109 cases

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 helicopter pilot reported that he was on a low reconnaissance over a field in a canyon intended for agricultural application. During a climb out that was on a heading facing the sun, he lost sight of a previously identified powerline, and attempted to avoid it by referencing the two supporting powerline poles. As the helicopter flew closer, he located the wires and believed that the helicopter’s trajectory would clear the obstacle; however, the helicopter struck the powerline, the pilot lost control, and the helicopter descended and impacted terrain. The helicopter sustained substantial damage to the fuselage and main rotor system. The pilot reported that there were no preaccident mechanical malfunctions or failures with the helicopter that would have precluded normal operation.

Aircraft

Registration
N6516K
Reported as
Bell 206L-3
Category
Helicopter
Serial number
51391
Built
1990
Airframe hours
18,581.5
Engine
Allison 250-C30P, 650 horsepower, turbo shaft
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Wilbur-Ellis Company LLC
Registered owner
Wilbur-Ellis Company LLC
Airworthiness certificate
Standard, Normal; Special, Restricted (Special)
Last inspection
100 hour · August 30, 2021
Departed
Tillamook, OR
Destination
Tillamook, OR
Equipment
ADS-B

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
40
Injuries
None
Certificates
Flight instructor, Commercial
Instrument ratings
Helicopter
Medical
Class 2, With waivers/limitations
Last flight review
October 4, 2020
Seat
Right
Restraint
4-point
Flight hours
3,349 total · 1,088 in this make and model · 3,261 as pilot in command · 215 in the last 90 days · 68 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
68 °F, dew point 55 °F
Altimeter
30.05 inHg
Observed at
KTMK, 8 nm away
METAR
METAR KTMK 081735Z AUTO 00000KT 10SM CLR 20/13 A3005 RMK AO2=

Docket · 2

The files NTSB released with the investigation on October 5, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.4 MB in all.

FAA reports on this event · 1

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