- Date
- May 14, 1992, 14:00 local (19:00 UTC)
- Place
- Mooreland, OK
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Maneuvering
- Aircraft
- N1006TAir Tractor AT-501
- Weather
- Visual (VMC) · Day
- Status
- Completed · report July 26, 1993
- Report
- Approved by Office Director
- FAA report
- 19920514014939A
- Case key
- 18496
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 failure of the number 3 cylinder for undetermined reasons. A factor was the lack of suitable terrain for the ensuing forced landing.
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.
Analysis
The pilot stated that the engine backfired several times and lost power as he was completing a turn to reverse direction and lining up for a swath run. He dumped the chemical load and applied full throttle, mixture, and propeller, but the actions did not alleviate the power loss. He elected to land on a nearby ridge line. During the landing roll, the airplane collided with several trees and rough terrain and nosed down. Examination of the engine revealed that the number 2 cylinder had failed for undetermined reasons. The operator reported this was the fourth cylinder failure that he had experienced on this engine since a major overhaul 710 hours prior to the accident.
Aircraft
- Registration
- N1006T
- Reported as
- Air Tractor AT-501
- Category
- Airplane
- Serial number
- 501-0030
- Engine
- P&W R-1340-S3, 600 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Aerial application · Part 137
- Operator
- Eubank, Terry W., doing business as Western Aero Ag
- Registered owner
- Eubank, Terry W.
- Airworthiness certificate
- Special, Restricted (Special)
- Last inspection
- Annual · February 1, 1992 · 60 hours before
- Departed
- WWR · Woodward, OK
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
- 50
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Seat
- Center
- Flight hours
- 7,935 total · 58 in this make and model · 7,935 as pilot in command · 46 in the last 90 days · 15 in the last 30 days · 2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 180° at 3 knots
- Visibility
- 30 statute miles
- Lowest ceiling
- None
- Temperature
- 84 °F
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 N1006T · 1
Matched to the same aircraft by N-number and date.