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ASN Wikibase Occurrence # 158025
Last updated: 2 December 2021
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Type:Silhouette image of generic AT3T model; specific model in this crash may look slightly different
Air Tractor AT-400
Owner/operator:Terhune Flying Service, Inc
Registration: N3159B
MSN: 400-0462
Fatalities:Fatalities: 1 / Occupants: 1
Aircraft damage: Written off (damaged beyond repair)
Location:SW of Bryan's Corner, OK -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Departure airport:Perryton, TX
Destination airport:Perryton, TX
Investigating agency: NTSB
The commercial pilot was en route from a private airstrip to a nearby field to apply herbicide and flying about 150 feet agl, when the airplane struck a 197-foot meteorological tower (MET) about 35 feet from its top. A survey of the accident scene revealed that the sun was ahead of and to the right of the airplane's flight path and likely obstructed the pilot's ability to see the tower. An examination of the airplane did not reveal any preimpact anomalies.

The NTSB recently concluded that, due to their rapid construction and lack of conspicuity, METs pose a threat to pilots who conduct low-altitude operations and recommended required registration, marking, and—where feasible—lighting of these structures in order to aid pilots in avoiding them.
Probable Cause: The pilot's failure maintain clearance from a meteorological tower while en route at a low altitude. Contributing to the accident was the sun's glare.


FAA register:

Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Download report: Final report

Revision history:

06-Aug-2013 00:39 Geno Added
06-Aug-2013 16:14 Geno Updated [Aircraft type, Registration, Cn, Operator, Source, Damage, Narrative]
21-Dec-2016 19:28 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
29-Nov-2017 08:59 ASN Update Bot Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative]

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