SEA89LA175

NTSB accident investigation · Bell 47G3B2 · Monitor, WA · September 18, 1989

Accident · FatalLimited investigationFinal report
Date
September 18, 1989, 07:35 local (14:35 UTC)
Place
Monitor, WA
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N83111Bell 47G3B2
Weather
Visual (VMC) · Day
Status
Completed · report June 25, 1992
Report
Approved by Office Director
FAA report
19890918035329A
Case key
41083

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 failed to maintain aircraft separation from obstacles on the ground. A factor in the accident was the bright glare from the rising sun.

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
Light condition - sunglareFactor
Clearance - not maintainedPilot in commandCause

Analysis

The aircraft impacted a 35 ft. high wind machine while the pilot was making an aerial application swath run, spraying an apple orchard. The aircraft was traveling toward the east, facing a bright rising morning sun.

Aircraft

Registration
N83111
Reported as
Bell 47G3B2
Category
Helicopter
Serial number
6857
Airframe hours
4,414
Engine
Lycoming TVO-435, 270 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Aerial application · Part 137
Registered owner
Cascade Helicopters, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 15, 1989 · 105 hours before
Departed
Monitor, 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
47
Certificates
Flight instructor, Commercial
Airplane ratings
Multi-engine land, Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Toxicology
Performed
Flight hours
6,900 total · 508 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
290° at 10 knots
Visibility
30 statute miles
Lowest ceiling
None
Temperature
54 °F, dew point 41 °F
Altimeter
29.00 inHg
Observed at
EAT, 11 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.

Other investigations on N83111 · 1

Matched to the same aircraft by N-number and date.