CEN12LA310

NTSB accident investigation · Air Tractor AT-602 · Humnoke, AR · May 19, 2012

Accident · No injuriesLimited investigationFinal report
Date
May 19, 2012, 16:00 local (21:00 UTC)
Place
Humnoke, AR
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N85239Air Tractor AT-602
Defining event
Landing-flare/touchdown: Landing area undershoot
Weather
Visual (VMC) · Day
Status
Completed · report October 15, 2012
Report
Approved by Office Director
NTSB office
Central Region
Parties
Federal Aviation Administration
FAA report
20120519007899A
Case key
83717

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot’s failure to attain the proper touchdown point, which resulted in a landing undershoot.

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: descent/approach/glide pathAircraft › Aircraft oper/perf/capability · Not attained/maintainedAir Tractor AT-602: 1 caseAll aircraft: 809 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotAir Tractor AT-602: 17 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 was returning from the completion of his 28th aerial application flight on the day of the accident. He stated that he misjudged the touchdown point for the landing and landed short of the dirt runway, striking a levee. He said that he had been working a full schedule all week and there was no doubt that he was “somewhat” tired, but he believed that a wind change “had more to do with the accident than any other factor.”

Factual narrative

On May 19, 2012, at 1600 central daylight time, an Air Tractor Inc AT-602, N85239, impacted terrain during landing when the airplane touched down short of runway 36 at a private airstrip near Humnoke, Arkansas. The pilot stated that he misjudged the touchdown point. The certificated commercial pilot was uninjured. The airplane sustained substantial damage to the fuselage. The airplane was registered to and operated by County Line Flying Service Inc under the provisions of 14 Code of Federal Regulations Part 137 as an aerial application flight. Visual meteorological conditions prevailed and a flight plan had not been filed for the local flight that originated from the private airstrip about 1553. The pilot stated that he had been working a full schedule all week and there was no doubt that he was somewhat tired. On the day of the accident, he started working about 0630, and the takeoff before the accident was his 28th load. He said that the wind change probably had more to do with the accident than any other factor. He said that he misjudged the touchdown point and landed short of runway 36 (2,600 feet by 60 feet, dry dirt).

Aircraft

Registration
N85239
Reported as
Air Tractor AT-602
Category
Airplane
Serial number
1130
Airframe hours
3,943
Engine
Pratt & Whitney PT6A-60AG, 1,050 horsepower, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
County Line Flying Service Inc
Registered owner
County Line Flying Service Inc
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · February 17, 2012
Departed
PVT · Humnoke, AR
Destination
PVT · Humnoke, AR
Airport
PVT · Brown Farm Dirt Strip, runway 36, 2,600 × 60 ft, dirt

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
61
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, With waivers/limitations
Last flight review
April 17, 2012
Seat
Single
Flight hours
22,000 total · 8,000 in this make and model · 22,000 as pilot in command · 204 in the last 90 days · 115 in the last 30 days · 8 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
165° at 6 knots
Lowest ceiling
None
Temperature
84 °F

Docket · 2

The files NTSB released with the investigation on August 8, 2012, on NTSB’s docket system: statements, records, photos and specialists’ reports. 625 KB in all.

FAA reports on this event · 1

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