MKC90LA030

NTSB accident investigation · Air Tractor AT301 · Ellinwood, KS · November 7, 1989

Accident · No injuriesLimited investigationFinal report
Date
November 7, 1989, 08:45 local (14:45 UTC)
Place
Ellinwood, KS
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N3158ZAir Tractor AT301
Weather
Visual (VMC) · Day
Status
Completed · report September 30, 1991
Report
Approved by Office Director
FAA report
19891107045779A
Case key
34912

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 partial failure of the engine for undetermined reasons which resulted in a forced landing. A factor related to the accident was the soft dirt.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine powerTakeoff - initial climb
Reason for occurrence undeterminedCause
Load jettison - performedPilot in command
Forced landingLanding - flare/touchdown
Main gear collapsedLanding - roll
Terrain condition - softFactor

Analysis

The pilot reported that during climbout he believed the aircraft sustained a partial loss of eng pwr. He dumped his chemical load as the acft descended. He maneuvered the acft to avoid several obstacles, but the left gear eventually separated after the acft landed in soft dirt. A post accident examination of the aircraft and the engine failed to account for the reported partial loss of engine pwr; the disassembly of the eng did not reveal any pre-impact malfunction.

Aircraft

Registration
N3158Z
Reported as
Air Tractor AT301
Category
Airplane
Serial number
301-0457
Airframe hours
2,365
Engine
P&W R1340-AN1, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Ellinwood Flying Service, Inc.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
100 hour · June 17, 1989 · 207 hours before
Airport
1K6 · Ellinwood

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
43
Certificates
Flight instructor, Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Helicopter, Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
7,500 total · 2,000 in this make and model · 7,470 as pilot in command · 50 in the last 90 days · 15 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
20 statute miles
Temperature
39 °F

FAA reports on this event · 1

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