| Tail Number / N-Number | N721RC |
| Manufacturer | ALEXANDER SCHLEICHER GMBH & CO |
| Model | ASK 21 |
| Year Built | 2015 |
| Manufacturer's Serial Number | 21930 |
| Aircraft Type | Glider |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | NONE |
| Engine Model | NONE |
| Number of Engines | 0 engines |
| Type of Registrant | Individual |
| Owner Name | CHARLTON ARTHUR R |
| Street | 114 LOVELLS LN |
| City | MARSTONS MILLS |
| State | MA |
| Zip Code | 02648-1833 |
| Region | New England |
| County | Barnstable County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2015-09-01 |
| Certificate Issue Date | 2015-08-24 |
| Last Action Date | 2021-04-02 |
| Expiration Date | 2028-08-31 |
| Status | Valid Registration |
| Mode S Code | 52324275 |
| Mode S Code Hex | A9A8BD |