ASN Wikibase Occurrence # 188955
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Date: | Friday 29 July 2016 |
Time: | 09:14 |
Type: | Air Tractor AT-402 |
Owner/operator: | Private |
Registration: | N1016G |
MSN: | 402-0720 |
Year of manufacture: | 1989 |
Total airframe hrs: | 7008 hours |
Engine model: | Pratt & Whitney Canada PT6A-27 |
Fatalities: | Fatalities: 1 / Occupants: 1 |
Aircraft damage: | Destroyed |
Category: | Accident |
Location: | 3 mls S of Sac City, IA -
United States of America
|
Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
Nature: | Agricultural |
Departure airport: | Carroll, IA (CIN) |
Destination airport: | Sac City, IA (SKI) |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:The commercial pilot was performing an aerial application flight to an area that a ground crewman described as a “wire farm” due to the number of power lines present. The pilot did not complete a circling pass over the target field to identify hazards before descending for the first aerial application pass. The pilot flew over a set of power lines, activated the airplane’s spray function, and completed one pass to the north. The airplane then climbed and made a left turn before descending toward the west side of the target field for a pass to the south. The pilot completed a pass on the west side, then impacted power lines on the south side of the field. The airplane continued south and impacted a corn field, where it came to rest upright. The top of the vertical stabilizer and the rudder were found near the power lines.
A postaccident examination of the airplane revealed evidence of multiple wire strikes to the canopy, wire protection system, and empennage. At least one wire was deflected over the canopy, along the wire deflector cable, and cut through the vertical stabilizer and rudder. At least one wire impacted the aluminum wire protection bar and the cockpit structure consistent with the wire not deflecting over the canopy. The examination did not reveal any preimpact anomalies that would have precluded normal operation.
Probable Cause: The pilot's failure to maintain adequate clearance from power lines. Contributing to the accident was the pilot's failure to circle over the field to identify hazards before beginning the aerial application.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | CEN16LA292 |
Status: | Investigation completed |
Duration: | 1 year and 7 months |
Download report: | Final report |
|
Sources:
NTSB
Location
Images:
Photo: NTSB
Photo: NTSB
Revision history:
Date/time | Contributor | Updates |
31-Jul-2016 15:11 |
harro |
Added |
31-Jul-2016 15:44 |
Aerossurance |
Updated [Time, Location] |
01-Aug-2016 06:05 |
sixwillwin |
Updated [Source] |
01-Aug-2016 18:00 |
harro |
Updated [Aircraft type, Registration, Cn, Operator, Source] |
24-Mar-2018 18:41 |
ASN Update Bot |
Updated [Time, Departure airport, Destination airport, Source, Narrative] |
24-Mar-2018 18:51 |
harro |
Updated [Narrative, Photo, ] |
24-Mar-2018 18:51 |
harro |
Updated [Photo, ] |
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