DEN08CA136

NTSB accident investigation · Air Tractor AT-402 · Dexter, NM · August 9, 2008

Accident · No injuriesData collectionFinal report
Date
August 9, 2008, 10:45 local (16:45 UTC)
Place
Dexter, NM
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N4555YAir Tractor AT-402
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report January 22, 2009
Report
Approved by Office Director
Parties
FAA Flight Standards District Office
FAA report
20080809844159A
Case key
68666

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 directional control of the airplane.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedAir Tractor AT-402: 2 casesAll aircraft: 3,958 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotAir Tractor AT-402: 4 casesAll aircraft: 9,295 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot said he was landing at the airstrip to refill the hopper with chemical. The airplane went off the side of the runway and ground looped. The left main landing gear was torn off, the left wing tip was scraped, and the left aileron was bent. The pilot reported no control malfunction or other anomalies with the airplane prior to the accident. According the repair facility spokesman, there was no way of determining if the the landing gear had been bent previously or if there was a discrepancy with the toe-in.

Factual narrative

On August 9, 2008 approximately 1045 mountain daylight time, an Air Tractor AT-402, N4555Y, registered to and operated by Summers Spraying Service and piloted by a commercial pilot, was substantially damaged when it ground looped and collided with terrain during landing at Richie Crockett Airstrip, a private airstrip, in Dexter, New Mexico. Visual meteorological conditions prevailed at the time of the accident. The aerial application flight was being conducted under the provisions of Title 14 CFR Part 137 without a flight plan. The pilot was not injured. The local flight originated from Dexter approximately 1000.

The pilot said he submitted NTSB Form 6120.1/2, Pilot/Operator Aircraft Accident Report, to the Dallas office of NTSB. It was never received. The following is based on information that was collected at the time of the accident: The pilot said he was landing at the airstrip to refill the hopper with chemical. The airplane went off the side of the runway and ground looped. The left main landing gear was torn off, the left wing tip was scraped, and the left aileron was bent. The pilot reported no control malfunction or other anomalies with the airplane prior to the accident.

The repair facility was contacted. According to a spokesman, due to the damage, there was no way of determining if the the landing gear had been bent previously or if there was a discrepancy with the toe-in.

Aircraft

Registration
N4555Y
Reported as
Air Tractor AT-402
Category
Airplane
Serial number
402-0812
Engine
Pratt & Whitney Canada PT6A-15AG, 680 horsepower, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Summers Spraying Srevice, Inc.
Registered owner
Summers Spraying Srevice, Inc.
Airworthiness certificate
Special, Restricted (Special)
Departed
NONE · Dexter, NM
Destination
NONE · Dexter, NM
Airport
NONE · Richie Crockett Airstrip

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
53
Injuries
None
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Seat
Center
Flight hours
12,000 total · 1 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
82 °F, dew point 63 °F
Altimeter
29.97 inHg
Observed at
ROW, 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.