| Tail Number / N-Number | N991P |
| Manufacturer | GLASER-DIRKS |
| Model | DG-400 |
| Manufacturer's Serial Number | 4-37 |
| 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) |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | JOHNSON PAUL W |
| Street | 857 NW DONELSON ST |
| City | HILLSBORO |
| State | OR |
| Zip Code | 97124-2819 |
| Region | Northwest Mountain |
| County | Washington County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1983-03-26 |
| Certificate Issue Date | 2017-07-21 |
| Last Action Date | 2020-02-20 |
| Expiration Date | 2027-07-31 |
| Status | Valid Registration |
| Mode S Code | 53353637 |
| Mode S Code Hex | ADD79F |