CEN13LA263

NTSB accident investigation · Air Tractor AT-602 · Udall, KS · May 5, 2013

Accident · No injuriesLimited investigationFinal report
Date
May 5, 2013, 17:45 local (22:45 UTC)
Place
Udall, KS
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N628JPAir Tractor AT-602
Defining event
Maneuvering-low-alt flying: Low altitude operation/event
Weather
Visual (VMC) · Day
Status
Completed · report July 29, 2013
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA-Wichita FSDO
FAA report
20130505011459A
Case key
86823

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 inadequate flight planning, which resulted in a wire strike.

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.

Object/animal/substance: wireEnvironmental issues › Physical environment · Contributed to outcomeAir Tractor AT-602: 10 casesAll aircraft: 588 cases

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 of an aerial application flight reported that he arrived at the field and conducted three surveillance orbits to check for obstacles and wires. The pilot flew five spraying passes over the field, but on the sixth pass, the airplane’s propeller and landing gear struck a powerline. The airplane started vibrating severely, and the pilot executed a forced landing to a nearby field. During the landing roll, the left wing struck a large bush that turned the airplane sideways as it skidded to a stop, which resulted in substantial damage to the wing. The pole associated with the powerline that was struck was located in the tree line, and the pilot did not see the low hanging powerline that ran at an angle across the field. He did not have a map of the field, and he was not informed about the low hanging powerline.

Factual narrative

On May 5, 2013, at 1745 central daylight time, an Air Tractor AT-602, N628JP, hit a wire during an aerial application flight near Udall, Kansas, and sustained substantial damage to the left wing during a forced landing to a field. The pilot was not injured. The airplane was registered to a private individual and operated by Andy Deterding Ag Aviation under the provisions of the 14 Code of Federal Regulations Part 137 as an agricultural application flight. Visual meteorological conditions prevailed for the flight, which was not operated on a flight plan. The flight departed from the Wellington Municipal Airport (EGT), Wellington, Kansas, at 1700. The pilot reported that he arrived at the field and conducted three surveillance orbits to check for obstacles and wires. He saw the powerlines that ran parallel to the roads located north and east of the field, but he did not see the low hanging powerline that ran at an angle across the field. The pilot flew five spraying passes over the field, but on the sixth pass, the airplane’s propeller and landing gear struck the powerline. The airplane started vibrating severely and the pilot executed a forced landing to a nearby field. During the landing roll, the left wing struck a large bush which turned the airplane sideways as it skidded to a stop, which resulted in substantial damage to the wing. The pole associated with the powerline that was struck was located in the tree line. The pilot reported that he did not have a map of the field, and that he was not informed about the low hanging powerline.

Aircraft

Registration
N628JP
Reported as
Air Tractor AT-602
Category
Airplane
Serial number
602-0564
Engine
P&W Canada PT6A-60AG, 1,050 horsepower, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Andy Deterding Ag Aviation
Registered owner
Mattern Rod
Airworthiness certificate
Special, Restricted (Special)
Departed
EGT · Wellington, KS
Destination
Udall, KS

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
50
Injuries
None
Certificates
Flight engineer, Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Without waivers/limitations
Seat
Single
Flight hours
18,000 total · 850 in this make and model · 17,800 as pilot in command · 50 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 5 knots
Visibility
10 statute miles
Temperature
64 °F

Docket · 7

The files NTSB released with the investigation on June 14, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.7 MB 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.

Other investigations on N628JP · 1

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