Wirestrike Accident Air Tractor AT-402A N9089L,
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ASN Wikibase Occurrence # 179293
 
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Date:Friday 2 July 2004
Time:20:05
Type:Silhouette image of generic AT3T model; specific model in this crash may look slightly different    
Air Tractor AT-402A
Owner/operator:Private
Registration: N9089L
MSN: 402A-1118
Year of manufacture:2000
Total airframe hrs:2029 hours
Engine model:Pratt & Whitney PT6A
Fatalities:Fatalities: 0 / Occupants: 1
Aircraft damage: Substantial
Category:Accident
Location:Hillsboro, Alabama -   United States of America
Phase: En route
Nature:Executive
Departure airport:Courtland, AL (9A4)
Destination airport:
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
According to the pilot, the airplane collided with the top wire of a transmission tower that "was not visible to [him]." He stated that the airplane spun around 180 degrees to the left, the airplane "was out of control," collided with the ground, and came to rest inverted in a nearby field. Examination of the wreckage site revealed the wreckage debris path extended across the field a distance of 75 feet leading up to the main wreckage site. The tower arm of the transmission tower, that was estimated to be 100 feet high, was bent, and the upper transmission wire was separated. Examination of the wreckage revealed that the engine assembly separated from the engine mounts. The propeller hub was separated from the crankshaft. The engine cowling and fuselage were crushed aft to the pilot compartment. The right wingtip was separated. The leading edge of the right wing was crushed beginning about midspan outboard to the end of the wing. The left wing was partially separated at the root and completely separated approximately midspan. The left horizontal stabilizer leading edge was crushed aft.

Probable Cause: The pilot's inadequate visual lookout and failure to maintain adequate obstacle clearance, which resulted in collision with transmission wires.

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: ATL04CA146
Status: Investigation completed
Duration:
Download report: Final report

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20040802X01121&key=1

Location

Revision history:

Date/timeContributorUpdates
05-Sep-2015 14:09 Noro Added
21-Dec-2016 19:30 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
07-Dec-2017 18:13 ASN Update Bot Updated [Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative]

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