CEN10CA412

NTSB accident investigation · Air Tractor AT-301 · Edmore, ND · July 17, 2010

Accident · No injuriesData collectionFinal report
Date
July 16, 2010, 21:00 local (Jul 17, 2010, 02:00 UTC)
Place
Edmore, ND
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N8774SAir Tractor AT-301
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report December 20, 2010
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA-FAR-FSDO
FAA report
20100716038809A
Case key
76689

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 selection of unsuitable terrain for landing.

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.

Planning/preparationPersonnel issues › Task performance · PilotAir Tractor AT-301: 1 caseAll aircraft: 113 casesProbable cause
Object/animal/substanceEnvironmental issues › Physical environment · Effect on operationAir Tractor AT-301: 2 casesAll aircraft: 224 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 was landing on a private grass strip that had not been used for several weeks during which time the grass had grown "considerably". Upon landing, the tall grass caught the left spray boom which resulted in the airplane traveling off the side of the runway into a wheat field. The pilot reported the airplane traveled 25 to 30 feet after contacting the tall grass, and it came to rest 90 degrees from the touchdown heading. The right wing and empennage were substantially damaged during the event.

Factual narrative

The pilot was landing on a private grass strip that had not been used for several weeks during which time the grass had grown "considerably". Upon landing, the tall grass caught the left spray boom which resulted in the airplane traveling off the side of the runway into a wheat field. The pilot reported the airplane traveled 25 to 30 feet after contacting the tall grass, and it came to rest 90 degrees from the touchdown heading. The right wing and empennage were substantially damaged during the event.

Aircraft

Registration
N8774S
Reported as
Air Tractor AT-301
Category
Airplane
Serial number
301-0190
Airframe hours
6,869
Engine
P&W R1340, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Brekke Aerial Service Inc
Registered owner
Brekke Aerial Service Inc
Airworthiness certificate
Special, Restricted (Special)
Last inspection
100 hour · May 1, 2010 · 5 hours before
Departed
Edmore, ND
Destination
Edmore, ND

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
54
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land, Single-engine sea, Multi-engine land
Medical
Class 2, With waivers/limitations
Last flight review
January 5, 2010
Seat
Center
Flight hours
7,600 total · 5,000 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
70° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 57 °F
Altimeter
29.92 inHg
Observed at
DVL, 27 nm away

Docket · 1

The files NTSB released with the investigation on August 19, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 772 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.