WPR21LA333

NTSB accident investigation · Bell Helicopter Textron 206L-1 · Glide, OR · August 27, 2021

Accident · Serious injuriesClass 4 · LimitedFinal report
Date
August 27, 2021, 06:30 local (13:30 UTC)
Place
Glide, OR · Wooded terrain
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N303AEBell Helicopter Textron 206L-1
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
Federal Aviation Administration
FAA report
20210827008709A
Case key
103789

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 a tree during an aerial application.

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.

Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedBell Helicopter Textron 206L-1: 2 casesAll aircraft: 1,310 casesProbable cause
Object/animal/substance: tree(s)Environmental issues › Physical environment · Awareness of conditionBell Helicopter Textron 206L-1: 1 caseAll aircraft: 933 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 pilot of the helicopter reported that, while conducting an aerial application over an open area, the main rotor blades struck a tree that he had previously not seen. Subsequently, the helicopter began to spin to the left and impacted the terrain. The helicopter sustained substantial damage to the fuselage and tailboom. The pilot reported that there were no preaccident mechanical malfunctions or failures with the helicopter that would have precluded normal operation.

Aircraft

Registration
N303AE
Reported as
Bell Helicopter Textron 206L-1
Category
Helicopter
Serial number
45348
Built
1979
Engine
Allison 250, 250 horsepower, turbo shaft
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
North Wind Aviation LLC
Registered owner
North Wind Aviation LLC
Airworthiness certificate
Special, Restricted (Special); Standard, Normal
Airport
N/A

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
67
Injuries
Serious
Certificates
Flight instructor, Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
January 1, 2021
Seat
Right
Restraint
4-point
Flight hours
29,000 total · 140,016 in this make and model · 27,000 as pilot in command · 200 in the last 90 days · 50 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
350° at 9 knots
Visibility
10 statute miles
Lowest ceiling
3,000 ft overcast
Temperature
63 °F, dew point 54 °F
Altimeter
30.09 inHg
Observed at
KRBG, 23 nm away
METAR
KRBG 271322Z AUTO 35009KT 10SM SCT015 OVC030 17/12 A3009 RMK AO2 T01720122

Docket · 3

The files NTSB released with the investigation on December 9, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 8.9 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.