| Tail Number / N-Number | N171DM |
| Manufacturer | PDPS PZL-BIELSKO |
| Model | SZD-55-1 |
| Manufacturer's Serial Number | 551192032 |
| Aircraft Type | Glider |
| Category | Land |
| Builder Certification | Not 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 | MARTIN WILLIAM F |
| Street | PO BOX 651 |
| City | WARREN |
| State | VT |
| Zip Code | 05674-0651 |
| Region | New England |
| County | Washington County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2005-06-02 |
| Certificate Issue Date | 2021-07-08 |
| Last Action Date | 2021-07-08 |
| Expiration Date | 2028-07-31 |
| Status | Valid Registration |
| Mode S Code | 50216473 |
| Mode S Code Hex | A11D3B |