DFW08CA086

NTSB accident investigation · Air Tractor At-301 · Plains, KS · March 26, 2008

Accident · No injuriesData collectionFinal report
Date
March 26, 2008, 09:00 local (14:00 UTC)
Place
Plains, KS
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N4427SAir Tractor At-301
Defining event
Approach-VFR pattern final: Loss of engine power (total)
Weather
Visual (VMC) · Day
Status
Completed · report April 30, 2008
Report
Approved by Office Director
Parties
Kansas City, Kansas
FAA report
20080326831429A
Case key
67722

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

A loss of engine power as a result of a blocked carburetor. A factor was the lack of suitable terrain for the forced landing.

Findings · 1

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.

Fuel systemAircraft › Aircraft systems · MalfunctionAir Tractor AT-301: 1 caseAll aircraft: 181 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 commercial pilot was repositioning a single-engine agricultural airplane to a private grass strip when the engine lost power while on final approach. The pilot was unable to maintain his altitude so he made a forced landing to the only suitable field available. However, during the roll out he applied the brakes to avoid colliding with a large sprinkler apparatus and flipped over. As a result the vertical stabilizer and the rudder were substantially damaged. Further examination of the radial engine by the operator revealed that the flexible intake hose had come loose and was ingested into the carburetor blocking the throat of the carburetor.

Factual narrative

The commercial pilot was repositioning a single-engine agricultural airplane to a private grass strip when the engine lost power while on final approach. The pilot was unable to maintain his altitude so he made a forced landing to the only suitable field available. However, during the roll out he applied the brakes to avoid colliding with a large sprinkler apparatus and flipped over. As a result the vertical stabilizer and the rudder were substantially damage. Further examination of the radial engine by the operator revealed that the flexible intake hose had come loose and was ingested into the carburetor blocking the throat of the carburetor.

Aircraft

Registration
N4427S
Reported as
Air Tractor At-301
Category
Airplane
Serial number
301-0087
Engine
Pratt & Whitney R1340, reciprocating
Damage
Substantial damage
Flight
Positioning · Part 91
Registered owner
Shannon L. Dickson
Airworthiness certificate
Standard, Utility
Departed
NONE · Lakin, KS
Destination
NONE · Plains, KS
Airport
NONE · Private

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
23
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2
Flight hours
490 total · 158 in this make and model

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.