FTW95LA028

NTSB accident investigation · Air Tractor AT-301 · Lubbock, TX · October 21, 1994

Accident · No injuriesLimited investigationFinal report
Date
October 21, 1994, 09:45 local (14:45 UTC)
Place
Lubbock, TX
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N8523SAir Tractor AT-301
Weather
Visual (VMC) · Day
Status
Completed · report May 9, 1995
Report
Approved by Office Director
FAA report
19941021035719A
Case key
19291

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 equipment. A factor was pilot fatigue.

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
Object - other
Clearance - not maintainedPilot in commandCause
Fatigue(flight schedule)Pilot in commandFactor
Loss of engine power(total) - mech failure/malfManeuvering - aerial application
Turbine assembly,turbine wheel - disintegrated
Forced landingDescent - emergency
On ground/water encounter with terrain/waterLanding - flare/touchdown
Landing gear,main gear - sheared

Analysis

The agricultural airplane collided with irrigation equipment while applying pesticides to a cotton field. After the collision, the engine lost power and the pilot executed a forced landing. The airplane was structurally damaged during the forced landing. The pilot stated that he was tired and had difficulty seeing the irrigation equipment which 'blended into the white cotton that was 90% open.'

Factual narrative

On October 21, 1994, at 0945 central daylight time, an Air Tractor AT-301, N8523S, was substantially damaged while manuevering near Lubbock, Texas. The commercial pilot was not injured. Visual meteorological conditions prevailed for the aerial application flight.

During an interview, the pilot reported that he was spraying cotton plant defoliant "close to the ground" in an effort to increase its effectiveness. During an application pass, the aircraft struck stationary irrigation spraying equipment with the left main landing wheel and the propeller. He stated that after the left main landing wheel made contact, the aircraft started to nose down and the propeller made contact with the wheels of the equipment. The engine then "exploded." The pilot maintained control of the aircraft and glided to a forced landing in a stripped corn field approximately 200 yards from the initial impact with the irrigation equipment. The pilot further stated that he was "tired after many days of spaying", and that the irrigation equipment was difficult to see because it "blended into the white cotton that was 90% open."

Examination of the airplane at the site revealed evidence of propeller blade contact on the irrigation spraying equipment. The left main landing gear was sheared from its attachment point and the left wing was structurally damaged during the forced landing.

Aircraft

Registration
N8523S
Reported as
Air Tractor AT-301
Category
Airplane
Serial number
AT-301
Airframe hours
5,500
Engine
Garrett TPE 331-1, 680 horsepower, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Reynolds, Ed R.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · October 13, 1993 · 430 hours before
Departed
Q24 · Levelland, TX
Destination
Q24 · 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
48
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Center
Flight hours
10,590 total · 2,454 in this make and model · 10,483 as pilot in command · 312 in the last 90 days · 210 in the last 30 days · 10 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
300° at 7 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
55 °F, dew point 43 °F
Altimeter
30.00 inHg
Observed at
LBB, 8 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 N8523S · 3

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