# NTSB CEN20CA039: Flight Design Ctsw, N91WW, Delaware, OH, December 20, 2019 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Data collection · Final report - Date: December 20, 2019, 15:40 local (20:40 UTC) - Place: Delaware, OH - Coordinates: 40.279724, -83.114723 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=40.2797&lon=-83.1147&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Defining event: [Takeoff: Loss of control in flight](https://openairdocs.org/ntsb-events/240) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report June 16, 2020 - Report: Approved by Office Director - NTSB office: Central Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 100720 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CEN20CA039 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/100720/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=100720 - Page: https://openairdocs.org/ntsb/CEN20CA039 ## Probable cause The student pilot’s failure to maintain yaw control during takeoff, which resulted in an aborted takeoff and subsequent landing on grassy terrain, during which the airplane bounced and then nosed over. ## 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 · Student/instructed pilot (probable cause); cases with it: [Flight Design CTSW, 20 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=0600001), [All aircraft, 9,308 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Performance/control parameters: yaw control](https://openairdocs.org/ntsb-findings/01062024): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Flight Design CTSW, 2 cases](https://openairdocs.org/ntsb-findings/01062024/cases.md?model=0600001), [All aircraft, 150 cases](https://openairdocs.org/ntsb-findings/01062024/cases.md) - [Runway/land/takeoff/taxi surface: soft surface](https://openairdocs.org/ntsb-findings/03023020): Environmental issues › Physical environment · Effect on operation (probable cause); cases with it: [Flight Design CTSW, 1 case](https://openairdocs.org/ntsb-findings/03023020/cases.md?model=0600001), [All aircraft, 264 cases](https://openairdocs.org/ntsb-findings/03023020/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Takeoff: Loss of control in flight](https://openairdocs.org/ntsb-events/240) (defining event); cases with it: [Flight Design CTSW, 10 cases](https://openairdocs.org/ntsb-events/240/sequence.md?model=0600001), [All aircraft, 5,010 cases](https://openairdocs.org/ntsb-events/240/sequence.md) - [Takeoff: Attempted remediation/recovery](https://openairdocs.org/ntsb-events/060); cases with it: [Flight Design CTSW, 4 cases](https://openairdocs.org/ntsb-events/060/sequence.md?model=0600001), [All aircraft, 1,428 cases](https://openairdocs.org/ntsb-events/060/sequence.md) - [Takeoff-rejected takeoff: Abnormal runway contact](https://openairdocs.org/ntsb-events/090); cases with it: [Flight Design CTSW, 4 cases](https://openairdocs.org/ntsb-events/090/sequence.md?model=0600001), [All aircraft, 1,514 cases](https://openairdocs.org/ntsb-events/090/sequence.md) - [Takeoff-rejected takeoff: Nose over/nose down](https://openairdocs.org/ntsb-events/096); cases with it: [Flight Design CTSW, 9 cases](https://openairdocs.org/ntsb-events/096/sequence.md?model=0600001), [All aircraft, 2,289 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The solo student pilot was flying in the traffic pattern and was intending to perform a touch-and-go landing. During the takeoff, the airplane "veered heavily to the left." The student attempted to correct the veer without success. The student then chose to land the airplane on grassy terrain. During the landing, the airplane bounced twice and nosed over, which resulted in substantial damage to the right wing and the rudder. The student reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. ## Factual narrative The student pilot was flying solo in the traffic pattern and had landed with the intention of performing a touch-and-go. During the takeoff, the airplane "veered heavily to the left." The student pilot attempted to correct the veer without success. The student pilot elected to land the airplane in the grass; the airplane bounced twice and then nosed over resulting in substantial damage to the right wing and rudder. The student pilot stated that there were no mechanical anomalies with the airplane that would have precluded normal operations. The student pilot did not maintain directional control of the airplane during the touch-and-go. ## Aircraft - Registration: [N91WW](https://openairdocs.org/deregistered/N91WW-2020-07-23), registration cancelled 2020-07-23, S/N 06-08-20, built 2006 (OpenAirDocs) - Reported make and model: Flight Design CTSW - Registry model: [Flight Design CTSW](https://openairdocs.org/model/flight-design-ctsw) (registry code 0600001) (OpenAirDocs) - Registry engine: [Rotax 912ULS series](https://openairdocs.org/engine/rotax-912uls-series) (registry code 55572, 4 cycle) (OpenAirDocs) - Category: Airplane - Serial number: 5-646-942 - Year built: 2006 - Airframe hours: 802 - Engines: Rotax ULS2 100 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Operator: new Flyers Association - Registered owner: Sunrae Aviation Llc - Airworthiness certificate: Special, Special light-sport (Special) - Last inspection: Condition, November 1, 2019 - Departed: DLZ, Delaware, OH - Destination: DLZ, Delaware, OH - Airport: DLZ, Delaware Municipal Airport, runway 28, 5,800 × 100 ft, asphalt - Equipment: Auto-pilot, Angle of attack indicator, Airframe parachute, Electronic primary flight display, Electronic multifunction display ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 42; injuries: minor; student; medical: class 3, without waivers/limitations; seat: left; restraint: 4-point; flight hours: 40 total, 25 in this make and model, 27 in the last 90 days, 15 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 170° at 3 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 36 °F, dew point 28 °F - Altimeter: 30.50 inHg ## 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 20191220020189A](https://openairdocs.org/incident/20191220020189A), Dec 20, 2019: Flight Design Gmbh CTSW, Delaware, OH, Substantial damage. Description: Student pilot on first solo attempted touch and go. After adding power aircraft veered off left side of runway approximately 2000 feet down the… ## Docket (2 files) The files NTSB released with the investigation on March 26, 2020, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=100720. 8.0 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 7.7 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40481617&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Accident Report Photographs (item 2, .PDF, 259 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40481618&FileExtension=.PDF&FileName=Accident%20Report%20Photographs-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.