CHI95LA260

NTSB accident investigation · Schweizer G-164A-450 · Grand Forks, ND · August 5, 1995

Accident · Minor injuriesLimited investigationFinal report
Date
August 5, 1995, 08:05 local (13:05 UTC)
Place
Grand Forks, ND
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N7994Schweizer G-164A-450
Weather
Visual (VMC) · Day
Status
Completed · report November 25, 1996
Report
Approved by Office Director
FAA report
19950805048079A
Case key
9977

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 transmission wires. A factor in the accident was the sunglare.

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
Object - wire,transmission

Analysis

The pilot was in the process of spraying a field which had two sets of powerlines located on the east side of the field. While finishing his fourth pass over the field, the pilot reported he was attempting to go under one set of wires and over the other set. The airplane collided with the wires, yawed to the right, and impacted the ground. The pilot stated that he believes the low sun in the east caused him to have some visual problem and possibly misjudge the location of the powerlines.

Factual narrative

On August 5, 1995, at 0805 central daylight time (cdt), an Schweizer G-164A, N7994, was substantially damaged when it struck transmission wires while maneuvering during an aerial application. The pilot reported minor injuries. The local 14 CFR Part 137 flight departed a private airstrip in Grand Forks, North Dakota, at 0740 cdt in visual meteorological conditions. No flight plan was on file.

The pilot reported he was in the process of spraying a field which had powerlines located along the east perimeter of the field and another set of powerlines which ran from the northwest to the southeast over the field. While finishing his fourth pass over the field, the pilot stated "I was going under the powerline in the field and over the small one by the road. The sun was very low in the east causing some visual problem and maybe made me misjudge the location of the powerlines." The airplane struck the powerline, yawed to the right, and impacted the ground.

Aircraft

Registration
N7994
Reported as
Schweizer G-164A-450
Category
Airplane
Serial number
855
Airframe hours
6,792
Engine
P&W R-1340-AN1, 450 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
4 Js Inc.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · May 31, 1995 · 226 hours before
Departed
NONE
Airport
NONE · Jensen, runway 18, 2,400 × 75 ft, grass/turf

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
32
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
5,111 total · 1,037 in this make and model · 271 in the last 90 days · 160 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
15 statute miles
Lowest ceiling
None
Temperature
64 °F

FAA reports on this event · 1

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