# NTSB ERA13CA035: AB Sportine Aviacija Genesis 2, N4KN, Roseland, VA, October 20, 2012 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Data collection · Final report - Date: October 20, 2012, 14:00 local (18:00 UTC) - Place: Roseland, VA - Coordinates: 37.803333, -78.940277 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=37.8033&lon=-78.9403&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Defining event: [Takeoff: Abnormal runway contact](https://openairdocs.org/ntsb-events/090) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report January 31, 2013 - Report: Approved by Office Director - NTSB office: Eastern Region Aviation - Parties: FAA/FSDO - NTSB case key (mKey): 85392 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ERA13CA035 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/85392/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=85392 - Page: https://openairdocs.org/ntsb/ERA13CA035 ## Probable cause The pilot’s failure to maintain glider control during takeoff. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [AB Sportine Aviacija GENESIS 2, 1 case](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=05606KT), [All aircraft, 9,310 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Performance/control parameters: lateral/bank control](https://openairdocs.org/ntsb-findings/01062023): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [AB Sportine Aviacija GENESIS 2, 1 case](https://openairdocs.org/ntsb-findings/01062023/cases.md?model=05606KT), [All aircraft, 391 cases](https://openairdocs.org/ntsb-findings/01062023/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Takeoff: Glider tow event](https://openairdocs.org/ntsb-events/510); cases with it: [AB Sportine Aviacija GENESIS 2, 1 case](https://openairdocs.org/ntsb-events/510/sequence.md?model=05606KT), [All aircraft, 45 cases](https://openairdocs.org/ntsb-events/510/sequence.md) - [Takeoff: Abnormal runway contact](https://openairdocs.org/ntsb-events/090) (defining event); cases with it: [AB Sportine Aviacija GENESIS 2, 1 case](https://openairdocs.org/ntsb-events/090/sequence.md?model=05606KT), [All aircraft, 1,515 cases](https://openairdocs.org/ntsb-events/090/sequence.md) - [Takeoff: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [AB Sportine Aviacija GENESIS 2, 3 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=05606KT), [All aircraft, 10,153 cases](https://openairdocs.org/ntsb-events/470/sequence.md) ## Analysis The pilot stated that as the glider reached flying speed, it began to oscillate with the right wing dipping and impacting the grass runway, which resulted in a loss of control. The tow line disconnected, as designed, and the glider came to rest in an inverted position. A postaccident examination revealed substantial damage to the wings and the vertical stabilizer. The pilot reported there were no mechanical malfunctions or failures with the glider that would have precluded normal operation. ## Factual narrative The pilot stated that as the glider reached flying speed it began to oscillate with the right wing dipping and impacting the grass runway, which resulted in a loss of control. The tow line disconnected, as designed, and the glider came to rest in an inverted position. The pilot sustained minor injuries. A post-accident examination conducted by a Federal Aviation Administration inspector revealed substantial damage to the wings and the vertical stabilizer. The pilot reported there were no mechanical malfunctions or anomalies with the glider that would have precluded normal operation. ## Aircraft - Registration: [N4KN](https://openairdocs.org/deregistered/N4KN-2013-01-30), registration cancelled 2013-01-30, S/N 2010, built 1999 (OpenAirDocs) - Reported make and model: AB SPORTINE AVIACIJA GENESIS 2 - Registry model: [AB Sportine Aviacija GENESIS 2](https://openairdocs.org/model/ab-sportine-aviacija-genesis-2) (registry code 05606KT) (OpenAirDocs) - Registry engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000, none) (OpenAirDocs) - Category: Glider - Serial number: 2010 - Airframe hours: 156 - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Loken Halvar Y - Registered owner: Loken Halvar Y - Airworthiness certificate: Standard, Normal; Special, Experimental (Special) - Last inspection: Annual, June 27, 2012, 1 hours before - Departed: N/A, Roseland, VA - Destination: N/A, Roseland, VA - Airport: N/A, Tinker Field, runway 21, 2,400 × 200 ft, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 46; injuries: minor; flight instructor, airline transport, commercial; airplane ratings: multi-engine land, single-engine sea, single-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review October 2, 2012; seat: single; flight hours: 11,020 total, 0 in this make and model, 9,605 as pilot in command, 60 in the last 90 days, 35 in the last 30 days, 3 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 300° at 6 knots, gusting 16 - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 63 °F, dew point 37 °F - Altimeter: 29.82 inHg - Observed at: LYH, 30 nm away ## 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 20121020023469A](https://openairdocs.org/incident/20121020023469A), Oct 20, 2012: Ab Sportine Aviacija GENESIS 2, Roseland, VA, Destroyed. Pilot lost control of glider on rotation, drug a wing, flipped end-over. Pilot state changes in wind caused it. (Perhaps wake turbulence from the tow aircraft.) ## Docket (4 files) The files NTSB released with the investigation on December 11, 2012, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=85392. 5.9 MB in all. - Pilot/Operator Aircraft Accident Pilot NTSB Form 6120.1 (item 1, .PDF, 5.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40383292&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Pilot%20NTSB%20Form%206120.1-Redacted.PDF - Memorandum of Record - Pilot Interview (item 2, .PDF, 172 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40382838&FileExtension=.PDF&FileName=Memorandum%20of%20Record%20-%20Pilot%20Interview-Master.PDF - Memorandum of Record - Weather Information (item 3, .PDF, 120 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40382849&FileExtension=.PDF&FileName=Memorandum%20of%20Record%20-%20Weather%20Information-Master.PDF - Picture of Accident Glider - courtesy of the FAA (item 4, .PDF, 411 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40382843&FileExtension=.PDF&FileName=Picture%20of%20Accident%20Glider%20-%20courtesy%20of%20the%20FAA-Master.PDF 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.