LAX01LA268

NTSB accident investigation · Weatherly 620B · Winnemucca, NV · August 4, 2001

Accident · No injuriesLimited investigationFinal report
Date
August 4, 2001, 05:45 local (12:45 UTC)
Place
Winnemucca, NV
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N90191Weatherly 620B
Weather
Visual (VMC) · Dawn
Status
Completed · report April 28, 2004
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20010804019309A
Case key
52935

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 the wires while he was maneuvering for an aerial application run.

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
Clearance - not maintainedPilot in commandCause
Object - wire,transmission

Analysis

The agricultural airplane impacted wires with its landing gear while the commercial pilot was maneuvering the airplane to spray a field. The pilot indicated he should hold more altitude above power lines to prevent a similar accident.

Factual narrative

On August 4, 2001, about 0545 Pacific daylight time, a Weatherly 620B single engine agricultural airplane, N90191, collided with power lines while spraying alfalfa fields near Winnemucca, Nevada. The airplane was registered to and operated by Morris Ag Air & Sons, Somerton, Arizona, under the provisions of 14 CFR Part 137 agricultural operations. The commercial pilot, who was the sole occupant, was not injured. The airplane was substantially damaged. Dawn visual meteorological conditions prevailed and a company flight plan was filed. The local flight originated about 0530, from a private airstrip near Winnemucca.

According to the pilot's written statement, he was entering the field to be treated toward the south when the main landing gear impacted three top wires paralleling a road that bordered the field. The chemical load then splashed over the cockpit and "made it impossible to see." The airplane impacted the ground, the landing gear separated, and the airplane skidded to an upright stop after 150 yards.

Under the section of the Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1/2) titled "Recommendation (How Could This Accident Have Been Prevented), the pilot wrote, "hold more altitude above the power lines."

Aircraft

Registration
N90191
Reported as
Weatherly 620B
Category
Airplane
Serial number
1615
Airframe hours
2,443
Engine
Garrett 1-1S1, 500 horsepower, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Morris Ag Air and Sons Inc.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · July 16, 2001 · 89 hours before
Departed
NONE · Winnemucca, NV
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.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
22
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Last flight review
April 1, 2000
Seat
Center
Flight hours
1,600 total · 300 in this make and model · 1,520 as pilot in command · 300 in the last 90 days · 120 in the last 30 days

Weather

Conditions
Visual (VMC) · Dawn
Visibility
10 statute miles
Lowest ceiling
None
Temperature
136 °F

FAA reports on this event · 1

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