| Tail Number / N-Number | N499UM |
| Manufacturer | LEARJET INC |
| Model | C-21A |
| Manufacturer's Serial Number | 84-0128 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 10 seats |
| Weight Class | CLASS 2 (12,500 - 19,999 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Type of Registrant | Government |
| Owner Name | SEATTLE COLLEGES |
| Street | 6000 16TH AVE SW |
| City | SEATTLE |
| State | WA |
| Zip Code | 98106-1401 |
| Region | Northwest Mountain |
| County | King County |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 2015-09-08 |
| Last Action Date | 2021-08-13 |
| Expiration Date | 2028-09-30 |
| Status | Valid Registration |
| Mode S Code | 51431525 |
| Mode S Code Hex | A63355 |