| Tail Number / N-Number | N21HH |
| Manufacturer | SCHEMPP-HIRTH |
| Model | MINI-NIMBUS HS7 |
| Year Built | 1978 |
| Manufacturer's Serial Number | 53 |
| Aircraft Type | Glider |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 1 seat |
| 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 | DERRER ANTHONY R |
| Street | 527 HAGEMANN DR |
| City | LIVERMORE |
| State | CA |
| Zip Code | 94551-6037 |
| Region | Western-Pacific |
| County | Alameda County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1979-05-15 |
| Certificate Issue Date | 2005-09-28 |
| Last Action Date | 2021-05-06 |
| Expiration Date | 2028-09-30 |
| Status | Valid Registration |
| Mode S Code | 50333740 |
| Mode S Code Hex | A1B7E0 |