FTW00LA257

NTSB accident investigation · Air Tractor 402B · Segraves, TX · September 6, 2000

Accident · No injuriesLimited investigationFinal report
Date
September 6, 2000, 14:10 local (19:10 UTC)
Place
Segraves, TX
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N6174HAir Tractor 402B
Weather
Visual (VMC) · Day
Status
Completed · report July 17, 2001
Report
Approved by Office Director
FAA report
20000906014629A
Case key
50244

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 irrigation system. A factor was the whirlwind weather condition.

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
Weather condition - dust devil/whirlwindFactor
Object - other
Forced landingEmergency descent/landing
Terrain condition - open field

Analysis

The pilot was applying chemical to a cotton field when the airplane encountered a 'large whirlwind.' The aircraft impacted an irrigation system separating both main landing gear. The pilot continued flying the airplane approximately one mile before executing a forced landing in a plowed field.

Factual narrative

On September 6, 2000, at 1410 central daylight time, an Air Tractor 402B agricultural airplane, N6174H, was substantially damaged when it impacted an irrigation system while maneuvering near Seagraves, Texas. The airplane was registered to and operated by McIntyre Spraying Service Inc., of Seagraves. The commercial pilot, sole occupant of the airplane, was not injured. Visual meteorological conditions prevailed for the 14 Code of Federal Regulations (CFR) Part 137 aerial application flight. The local flight originated from the Seagraves Airport at 1300.

According to the pilot, he was flying from east to west applying malathion to a cotton field when the airplane encountered a "large whirlwind." The aircraft impacted an irrigation system separating both main landing gear. The pilot continued flying the airplane approximately 1 mile before executing a forced landing in a plowed field.

An examination of the airplane by the FAA inspector revealed that both main landing gear separated from the airframe, the main wing carry-through spar was damaged, and the right wing spar was structurally damaged.

Aircraft

Registration
N6174H
Reported as
Air Tractor 402B
Category
Airplane
Serial number
402B-0994
Engine
P&W PT6-15AG, 680 horsepower, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Mcintyre Sparying Service Inc.
Airworthiness certificate
Special, Restricted (Special)
Departed
F97 · Seagraves, TX

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
64
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Center
Flight hours
16,000 total · 2,500 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
135° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
91 °F, dew point 57 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

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