N646MA is a 2005 Flight Design Gmbh CTSW (fixed wing single engine) with serial number 05-11-07, registered in Sioux Falls, SD. Its FAA registration is valid and runs until Jan 31, 2031; the renewal window opens on Jul 31, 2030. It is powered by a Rotax SEE BOMBADIER. Its airworthiness certificate is in the light sport class (airplane), issued Jan 12, 2006. It is one of 181 CTSW aircraft in the FAA registry, 3 of them registered in South Dakota. About 83% of them were built after it. The NTSB accident database lists one record for this airframe since 2008, the latest on Jul 5, 2025.
Registration
- FAA status
- Valid registration
- Expires
- Jan 31, 2031
- Registrant type
- Corporation
- Registered owner
- KEN GRAHAM PHD INC
- Location
- Sioux Falls, SD
- Local FAA office (FSDO)
- Rapid City FSDO (RAP FSDO) · (605) 737-3050
- Certificate issued
- Jan 9, 2024
- Last FAA action
- Oct 17, 2024
- Mode S code (hex)
- A87C99
- Mode S code (octal)
- 52076231
- Official record
- registry.faa.gov
Aircraft
- Manufacturer
- FLIGHT DESIGN GMBH
- Model
- CTSW
- Year manufactured
- 2005
- Serial number
- 05-11-07
- Aircraft type
- Fixed wing single engine
- Engine type
- 4 cycle
- Engine
- ROTAX SEE BOMBADIER
- Engines / seats
- 1 / 2
- Weight class
- Up to 12,499 lb
- Airworthiness
- Light sport since Jan 12, 2006
- Approved operations
- Airplane
Public airports near Sioux Falls
| Airport | ID | Distance | Tower | Fuel |
|---|---|---|---|---|
| Joe Foss Field Sioux Falls, SD | KFSD | 3 mi | Towered | 100LL, A |
| Marv Skie-Lincoln County Tea, SD | Y14 | 7 mi | Non-towered | 100LL, A |
| Zangger Vintage Airpark Larchwood, IA | 2VA | 18 mi | Non-towered | - |
Straight-line distance from the registration city, from the FAA airport directory (NASR). The registry does not say where an aircraft is based.
Earlier registrations of this number
| Canceled | Aircraft | Serial | Year | Exported to | Same airframe today |
|---|---|---|---|---|---|
| Oct 2, 1980 | PIPER PA-23-250 | 27-3255 |
NTSB accident and incident records
| Date | Place | Aircraft (as NTSB recorded it) | Damage | Highest injury | NTSB no. |
|---|---|---|---|---|---|
| Jul 5, 2025 | Joliet, IL | Flight Design Gmbh CTSW this airframe | Substantial | None | CEN25LA238 |
From the NTSB aviation accident database (events since 2008, data through Oct 28, 2026), matched by N-number. An N-number can move between aircraft, so each row is checked against the serial number on the current registration.