# NTSB FTW04LA176: Rockwell S-2R, N8486V, Jonesville, LA, July 6, 2004 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: July 6, 2004, 13:45 local (18:45 UTC) - Place: Jonesville, LA - Coordinates: 31.625, -91.82917 - Nearby events: https://openairdocs.org/map.md?lat=31.6250&lon=-91.8292&mi=10 - Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report October 28, 2004 - Report: Approved by Office Director - Parties: Federal Aviation Administration - NTSB case key (mKey): 59564 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW04LA176 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/59564/pdf - Page: https://openairdocs.org/ntsb/FTW04LA176 ## Probable cause The pilot's failure to maintain clearance with the power lines. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(partial) - mech failure/malf, maneuvering - aerial application - In flight collision with object, maneuvering - aerial application - object - wire,transmission (cause) - clearance - not maintained, pilot in command (cause) ## Analysis The 13,000-hour pilot reported that during an aerial application flight, the engine suffered a partial loss of power. The pilot initiated a turn toward the nearest airport to conduct a precautionary landing, when the airplane struck a power line. The pilot was able to land the airplane at the airport without further incident. The pilot stated that he did not see the power line prior to hitting it. ## Factual narrative On July 6, 2004, at 1345 central daylight time, a Rockwell S-2R agricultural single-engine airplane, N8486V, was substantially damaged upon collision with power lines while maneuvering near Jonesville, Louisiana. The non-instrument rated commercial pilot, sole occupant of the airplane, sustained minor injuries. The airplane was owned and operated by the Wilmot Flying Service, Inc., of Wilmot, Arkansas. Visual meteorological conditions prevailed and no flight plan was filed for the 14 Code of Federal Regulations Part 137 aerial application flight. The local flight was reported to have originated from a private airstrip near Wisner, Louisiana, at 1315. The 13,000-hour pilot reported to the NTSB investigator-in-charge, that while spraying under a boll weevil eradication contract, the engine blower malfunctioned, resulting in a partial loss of engine power. The pilot added that he was only able to obtain a maximum of 29 inches of manifold pressure from the Pratt & Whitney R1340 radial engine with the throttle in the full-open position, so he elected to head for the nearest airport. As the pilot initiated a turn toward the airport at the reduced power setting, the wire-cutter equipped airplane collided and cut a 1/2-inch power line which the pilot had not seen. The pilot managed to fly the airplane 5.5 miles to the Jonesville Airport, and landed without further incident. Examination of the airplane by the pilot revealed structural damage to both wings, substantial damage to the cockpit area including the roll cage, as well as damage to the propeller, engine cowling and landing gear. The condition of the engine blower could not be established; however, the pilot reported unusually heavy oil streaks throughout the belly of the airplane. A completed Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1/2) was not received from either the pilot or operator. ## Aircraft - Registration: [N8486V](https://openairdocs.org/deregistered/N8486V-2009-05-12), registration cancelled 2009-05-12, S/N 2246R, built 1976 (OpenAirDocs) - Reported make and model: Rockwell S-2R - Registry model: [Rockwell International S-2R](https://openairdocs.org/model/rockwell-international-s-2r) (registry code 7630202) (OpenAirDocs) - Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 2246R - Engines: Pratt & Whitney R1340 600 horsepower reciprocating - Damage: Substantial damage - Flight: Aerial application, Part 137 - Registered owner: Wilmot Flying Service Inc. - Airworthiness certificate: Special, Restricted (Special) - Departed: LS35, Wissner, LA ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; injuries: minor; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 13,000 total ## Weather - Conditions: Visual (VMC), Day - Wind: 230° at 7 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 90 °F, dew point 75 °F ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 20040706017909A](https://openairdocs.org/incident/20040706017909A), Jul 6, 2004: Ayres S2R, Jonesville, LA, Substantial damage. (-23) Aircraft experienced loss of power during spray run. Pilot collided with powerlines while maneuvering the aircraft towards nearest airport. Pilot was… From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.