# NTSB CHI99LA175: Ayres S2R-G10, N3024U, North Platte, NE, June 6, 1999 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: June 6, 1999, 08:30 local (13:30 UTC) - Place: North Platte, NE - Coordinates: 41.129615, -100.770668 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=41.1296&lon=-100.7707&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report January 18, 2001 - Report: Approved by Office Director - NTSB case key (mKey): 46511 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI99LA175 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/46511/pdf - Page: https://openairdocs.org/ntsb/CHI99LA175 ## Probable cause The pilot failed to maintain directional control during takeoff. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - On ground/water encounter with terrain/water, takeoff - roll/run - directional control - not maintained, pilot in command (cause) ## Analysis The pilot reported that during takeoff roll, the aircraft '...started to go suddenly to the right. I used full left rudder and then applied left brake. [The] A/C continued right and went off [the] runway....' The pilot reported that the airplane had a counter-rotating propeller, and that during takeoff left rudder was required for directional control. He reported that he thought a gust of wind might have occurred. He reported that, 'I was behind it.' ## Factual narrative On June 6, 1999, at 0830 central daylight time, an Ayers S2R-G10, N3024U, operated by Top Hat Aerial Application, Inc., was substantially damaged during takeoff roll when the airplane veered off the runway. The 14 CFR Part 137 aerial application flight was departing runway 12R at the North Platte Regional Airport, North Platte, Nebraska, on a local flight. The airplane veered to the right and went off the runway. Substantial damage occurred to the left wing when the left main landing gear collapsed. The commercial pilot was not injured. Visual meteorological conditions prevailed and no flight plan was filed. The pilot reported that during takeoff roll, the aircraft "...started to go suddenly to the right. I used full left rudder and then applied left brake. [The] A/C continued right and went off [the] runway...." The pilot reported that the airplane had a counter-rotating propeller, and that during takeoff left rudder was required for directional control. He reported that he thought a gust of wind might have occurred. He reported that, "I was behind it." ## Aircraft - Registration: [N3024U](https://openairdocs.org/aircraft/N3024U), registered now, S/N G10-108, built 1994 (OpenAirDocs) - Reported make and model: Ayres S2R-G10 - Registry model: [Ayres S2R-G10](https://openairdocs.org/model/ayres-s2r-g10) (registry code 0970217) (OpenAirDocs) - Registry engine: [AiResearch TPE331 series](https://openairdocs.org/engine/airesearch-tpe331-series) (registry code 01517, turbo-prop) (OpenAirDocs) - Category: Airplane - Serial number: G10-108 - Airframe hours: 982 - Engines: Allied Signal TP-331-10511M turbo prop - Damage: Substantial damage - Flight: Aerial application, Part 137 - Registered owner: Top Hat Aerial Application - Airworthiness certificate: Special, Restricted (Special) - Last inspection: Annual, November 22, 1998, 30 hours before - Departed: LBF - Airport: LBF, North Platte Regional, runway 12R, 4,926 × 100 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 54; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 15,000 total, 4,000 in this make and model, 14,800 as pilot in command, 50 in the last 90 days, 40 in the last 30 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 260° at 7 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 54 °F, dew point 46 °F - Altimeter: 29.00 inHg - Observed at: LBF ## 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 19990606006439A](https://openairdocs.org/incident/19990606006439A), Jun 6, 1999: Ayres S2RG10, North Platte, NE, Substantial damage. Acft right brake locked on take-off, and the left wing sustained damage, other circumstances are unknown. (-23)on June 6, 1999, at 0830 CDT, an ayers S2R-F10,… ## Other investigations on N3024U (1) 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. - [NTSB CHI05CA246](https://openairdocs.org/ntsb/CHI05CA246), Aug 29, 2005: Ayres S2R-G10 (N3024U), Davenport, ND, substantial damage. Probable cause: The pilot failed to gain suffient altitude during takeoff in order to clear the corn crop at the end of the runway. A factor associated with the accident was the corn crop. 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.