GAA15CA194

NTSB accident investigation · Air Tractor AT 402B · Monte Vista, CO · July 22, 2015

Accident · No injuriesData collectionFinal report
Date
July 22, 2015, 14:00 local (19:00 UTC)
Place
Monte Vista, CO
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N402KNAir Tractor AT 402B
Defining event
Landing-flare/touchdown: Abnormal runway contact
Weather
Visual (VMC) · Day
Status
Completed · report September 30, 2015
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
Federal Aviation Administration
FAA report
20150722012569A
Case key
91610

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 during the landing, which resulted in a runway excursion and collision with objects.

Findings · 3

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotAir Tractor AT-402B: 7 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedAir Tractor AT-402B: 4 casesAll aircraft: 3,958 casesProbable cause
Object/animal/substance: ground vehicleEnvironmental issues › Physical environment · Contributed to outcomeAir Tractor AT-402B: 1 caseAll aircraft: 132 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 stated that during the landing roll, the airplane became airborne after encountering a wind gust. He reported that the airplane bounced as it settled back to the runway, veered to the right, and departed the runway. During the runway excursion, the airplane impacted several vehicles. The airplane sustained substantial damage to both wings and the fuselage. The pilot reported that there were no pre-impact mechanical failures or malfunctions that would have precluded normal operation.

Factual narrative

The pilot stated that during the landing roll, the airplane became airborne after encountering a wind gust. He reported that the airplane bounced as it settled back to the runway, veered to the right, and departed the runway. During the runway excursion, the airplane impacted several vehicles. The airplane sustained substantial damage to both wings and the fuselage. The pilot reported that there were no pre-impact mechanical failures or malfunctions that would have precluded normal operation.

Aircraft

Registration
N402KN
Reported as
Air Tractor AT 402B (B)
Category
Airplane
Serial number
402B-1159
Built
2005
Airframe hours
1,599.7
Engine
Pratt & Whitney PT6-34AG, 750 horsepower, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · January 24, 2015 · 100 hours before
Departed
MVI · Monte Vista, CO
Destination
MVI · Monte Vista, CO
Airport
MVI · Monte Vista Municipal, runway 34, 2,300 × 30 ft, dirt
Equipment
Stall warning system

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
29
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Without waivers/limitations
Last flight review
April 18, 2014
Seat
Center
Restraint
4-point
Flight hours
1,300 total · 100 in this make and model · 1,100 as pilot in command · 100 in the last 90 days · 75 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
150° at 10 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
77 °F, dew point 36 °F
Altimeter
30.20 inHg
Observed at
KALS, 10 nm away

Docket · 1

The files NTSB released with the investigation on September 11, 2015, on NTSB’s docket system: statements, records, photos and specialists’ reports. 59 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.