# N521CT: 2008 Flight Design CTLS, registration cancelled 2023-02-04

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: February 4, 2023
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Flight Design CTLS](https://openairdocs.org/model/flight-design-ctls) (registry code 060005B)
- Engine: [Rotax 912ULS series](https://openairdocs.org/engine/rotax-912uls-series) (registry code 55572)
- Serial number: F-08-09-03
- Year built: 2008
- Type of aircraft: Fixed wing single engine
- Engine type: 4 cycle
- Airworthiness: Light sport, airplane
- Airworthiness date: January 29, 2009
- Certificate issued: October 31, 2016
- Last registry action: June 11, 2019
- Mode S code: A68CE9
- Owner when cancelled: [2825 Golf LLC](https://openairdocs.org/faa-owner/2825%20GOLF%20LLC)
- Location: [Oak Creek, WI](https://openairdocs.org/faa-place/WI/Oak%20Creek)
- Owner type: LLC
- Owner's area on the map: 42.8787° N, 87.8987° W: Placed by OpenAirDocs at the center of ZIP code 53154, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N521CT
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=521CT
- Page: https://openairdocs.org/deregistered/N521CT-2023-02-04

From the FAA registry file of November 5, 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 CTLS: https://openairdocs.org/model/flight-design-ctls.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 CEN21LA222](https://openairdocs.org/ntsb/CEN21LA222), May 18, 2021: Flight Design Ctls (N521CT), Racine, WI, destroyed. Probable cause: The fatigue failure of the carburetor throttle control cable, which resulted in a partial loss of engine control.

## 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 20210517009799A](https://openairdocs.org/incident/20210517009799A), May 17, 2021: Flight Design Gmbh CTLS (N521CT), Racine, WI, Destroyed. Attempted to land krcc three times with aircraft engine running rough and aircraft shacking. Power settings could not be held as power kept increasing to the…

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