CHI00LA177

NTSB accident investigation · Air Tractor AT-502 · Portland, ND · June 29, 2000

Accident · No injuriesLimited investigationFinal report
Date
June 29, 2000, 13:00 local (18:00 UTC)
Place
Portland, ND
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N91891Air Tractor AT-502
Weather
Visual (VMC) · Day
Status
Completed · report May 8, 2001
Report
Approved by Office Director
FAA report
20000629036889A
Case key
49569

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 intentionally operated the airplane with known damage on the left wing which resulted in the pilot's inability to maintain control of the airplane during takeoff.

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 control - in flightTakeoff - initial climb
Wing - previous damage
Operation with known deficiencies in equipment - intentionalPilot in commandCause
Aircraft control - not possiblePilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The pilot made a forced landing on a road following a loss of engine power. The leading edge of the left wing and left aileron were damaged when it contacted a road sign during the landing. The pilot was able to get the engine started. He decided to takeoff on the road and fly back to his private airstrip. The pilot reported that once airborne, the airplane began to roll to the left. He reported that he added right aileron control, but the airplane continued to roll until it contacted the terrain.

Factual narrative

On June 29, 2000, at 1300 central daylight time, an Air Tractor AT-502, N91891, operated by a commercial pilot collided with the terrain following a loss of control during takeoff from a road in Portland, North Dakota. The pilot was not injured. The airplane was substantially damaged. The 14 CFR Part 137 flight was being operated in visual meteorological conditions prevailed and no flight plan was filed. The flight was originating at the time of the accident.

The pilot reported that he made an emergency landing on the road following a loss of engine power. He stated that during the forced landing, the left wing of the airplane contacted a road sign. This resulted in damage to the leading edge of the wing and left aileron. The pilot reported that he had mechanics look at the airplane and it was determined that the loss of power was due to an "air lock." He stated they bled the fuel line and started the engine. The pilot reported that he determined that he could fly the airplane off the road and back to his private airstrip. The pilot stated that once airborne the airplane rolled to the left. He stated that he added right aileron control, however the airplane continued to roll until it struck the ground.

Aircraft

Registration
N91891
Reported as
Air Tractor AT-502
Category
Airplane
Serial number
502-0224
Airframe hours
2,656
Engine
P&W PT6A-34AG, 750 horsepower, turbo prop
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Willmar Aerial Spraying
Airworthiness certificate
Special, Restricted (Special)
Last inspection
100 hour · June 20, 2000 · 30 hours before
Departed
NONE · ND
Destination
PVT · Olivia, MN

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
35
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
7,046 total · 1,500 in this make and model · 6,937 as pilot in command · 130 in the last 90 days · 70 in the last 30 days · 8 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
290° at 9 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
75 °F, dew point 55 °F
Observed at
GFK, 32 nm away

FAA reports on this event · 1

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