CHI98LA290

NTSB accident investigation · Air Tractor AT-301 · Mentha, MI · July 31, 1998

Accident · No injuriesLimited investigationFinal report
Date
July 31, 1998, 13:30 local (18:30 UTC)
Place
Mentha, MI
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N3659TAir Tractor AT-301
Weather
Visual (VMC) · Day
Status
Completed · report May 19, 1999
Report
Approved by Office Director
FAA report
19980731019399A
Case key
43591

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

the pilot's improper inflight decision to land the airplane on the gravel covered road with an uneven surface that had corn growing next to its edge. A factor in this accident was the pilot selecting an unsuitable landing area.

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.

On ground/water collision with objectLanding - flare/touchdown
Terrain condition - crop
In-flight planning/decision - improperPilot in commandCause
Terrain condition - loose gravel/sandy
Unsuitable terrain or takeoff/landing/taxi area - selectedPilot in commandFactor
Terrain condition - rough/uneven
Loss of control - on ground/waterLanding - flare/touchdown
Remedial action - not possiblePilot in command
On ground/water collision with objectLanding - roll

Analysis

The pilot of an aerial applicator airplane landed his airplane on a road that had an uneven surface and was covered with lose gravel. The road had mature corn growing along its edges. The pilot said his left wing tip struck the corn as the airplane touched down. Furrows in the gravel showed the airplane had turned about 45-degrees to the left shortly after touch down. The furrows continued into and through a ditch and into the corn where the airplane came to a stop.

Factual narrative

On July 31, 1998, at 1500 eastern daylight time, an Air Tractor AT-301, N3659T, piloted by a commercial pilot, was substantially damaged when it collided with mature corn and a ditch after it veered off a gravel road's left side shortly after touching down for landing. Visual meteorological conditions prevailed at the time of the accident. The 14 CFR Part 137 aerial application flight was not operating on a flight plan. The pilot reported no injuries. The flight had departed the same gravel road near Mentha, Michigan, exact time unknown.

The pilot said his airplane's left wingtip collided with mature corn growing next to the road he was landing on when the airplane touched down. The on-scene investigation revealed the road's surface was uneven and covered with about 1/4 to 1/2- inch of lose gravel with hard-packed dirt underneath. Furrows in the gravel showed the airplane had turned about 45-degrees to the left shortly after touch down. The furrows were made by the airplane's main landing gear tires. The furrows continued through the ditch and into the corn where the airplane came to rest.

N3659T's right wing was bent upward about 10-degrees beyond its normal dihedral angle. The right main landing gear leg had been pushed in toward the center of the airplane's fuselage. The leading edges of both wings had multiple dents ranging between 2 and 4-inches deep.

Aircraft

Registration
N3659T
Reported as
Air Tractor AT-301
Category
Airplane
Serial number
301-0329
Airframe hours
6,417
Engine
P&W R-1340AN1, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Robertson Crop Dusting Service
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · April 2, 1997 · 300 hours before
Departed
RLA
Destination
RLA

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
33
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
3,417 total · 300 in this make and model · 3,407 as pilot in command · 250 in the last 90 days · 100 in the last 30 days · 7 in the last 24 hours

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.

Other investigations on N3659T · 1

Matched to the same aircraft by N-number and date.