CHI08CA223

NTSB accident investigation · Air Tractor AT-301 · Ambia, IN · July 26, 2008

Accident · No injuriesData collectionFinal report
Date
July 26, 2008, 07:00 local (11:00 UTC)
Place
Ambia, IN
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N3169RAir Tractor AT-301
Defining event
Maneuvering-low-alt flying: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report August 28, 2008
Report
Approved by Office Director
FAA report
20080726841659A
Case key
68677

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 altitude/clearance not obtained/maintained by the pilot while maneuvering over an agricultural field during an aerial application. Contributing factors were the sunglare in the direction of flight, the low altitude of the operation, and the upslope of the field.

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.

Light condition: glareEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeAir Tractor AT-301: 1 caseAll aircraft: 109 casesProbable cause
Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedAir Tractor AT-301: 6 casesAll aircraft: 1,310 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 approached and descended towards the west over power lines adjacent to the east/west corn field that he was going to spray. He noted that the sun was "kinda bright" and was a restriction to visibility. During the round out to level flight over the field, the pilot noticed that the airplane continued to sink and before he could release the spray handle and actuate the dump handle, the airplane impacted the field. The pilot "thinks" that his left hand went from the spray lever to the power lever to both hands on the control stick to try and keep the wings level to avoid the airplane from nosing over. The pilot stated that the field "appeared" to be flat but was later told that it had a "slight" rise.

Factual narrative

The pilot approached and descended towards the west over power lines adjacent to the east/west corn field that he was going to spray. He noted that the sun was "kinda bright" and was a restriction to visibility. During the round out to level flight over the field, the pilot noticed that the airplane continued to sink and before he could release the spray handle and actuate the dump handle, the airplane impacted the field. The pilot "thinks" that his left hand went from the spray lever to the power lever to both hands on the control stick to try and keep the wings level to avoid the airplane from nosing over. The pilot stated that the field "appeared" to be flat but was later told that it had a "slight" rise.

Aircraft

Registration
N3169R
Reported as
Air Tractor AT-301
Category
Airplane
Serial number
301-0575
Engine
Pratt & Whitney 1340 AN, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Aero Charter Express Inc
Airworthiness certificate
Special, Restricted (Special)
Departed
DNV · Danville, IL
Destination
DNV

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
46
Certificates
Commercial, Private
Airplane ratings
Single-engine land
Medical
Class 2
Flight hours
413 total · 139 in this make and model · 80 in the last 90 days · 60 in the last 30 days

Weather

Conditions
Visual (VMC) · Day

FAA reports on this event · 1

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