# N91WW: 2006 Flight Design CTSW, registration cancelled 2020-07-23

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: July 23, 2020
- Status when cancelled: Second renewal notice
- Airframe: [Flight Design CTSW](https://openairdocs.org/model/flight-design-ctsw) (registry code 0600001)
- Engine: [Rotax 912ULS series](https://openairdocs.org/engine/rotax-912uls-series) (registry code 55572)
- Serial number: 06-08-20
- Year built: 2006
- Type of aircraft: Fixed wing single engine
- Engine type: 4 cycle
- Airworthiness: Light sport, airplane
- Airworthiness date: December 18, 2006
- Certificate issued: July 28, 2017
- Last registry action: July 28, 2017
- Mode S code: AC965B
- Owner when cancelled: [Sunrae Aviation LLC](https://openairdocs.org/faa-owner/SUNRAE%20AVIATION%20LLC)
- Location: [Columbus, OH](https://openairdocs.org/faa-place/OH/Columbus)
- Owner type: LLC
- Owner's area on the map: 40.0231° N, 83.0761° W: Placed by OpenAirDocs at the center of ZIP code 43221, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N91WW
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=91WW
- Page: https://openairdocs.org/deregistered/N91WW-2020-07-23

From the FAA registry file of October 29, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Flight Design CTSW: https://openairdocs.org/model/flight-design-ctsw.md

## NTSB investigations (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 CEN20CA039](https://openairdocs.org/ntsb/CEN20CA039), Dec 20, 2019: Flight Design Ctsw (N91WW), Delaware, OH, substantial damage. 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…

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20191220020189A](https://openairdocs.org/incident/20191220020189A), Dec 20, 2019: Flight Design Gmbh CTSW (N91WW), 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…

## Other aircraft with N91WW

- [Cancelled 2004-03-11](https://openairdocs.org/deregistered/N91WW-2004-03-11): Smith AEROSTAR 600, S/N 60-0262-105, built 1975. Triennial form not returned. Owner: [Air Carriers Inc](https://openairdocs.org/faa-owner/AIR%20CARRIERS%20INC), [Bessemer, AL](https://openairdocs.org/faa-place/AL/Bessemer)

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