| Tail Number / N-Number | N91CW |
| Manufacturer | IAI LTD |
| Model | GULFSTREAM G280 |
| Manufacturer's Serial Number | 2215 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 21 seats |
| Weight Class | CLASS 3 (20,000+ pounds gross take off weight) |
| Number of Engines | 2 engines |
| Type of Registrant | Corporation |
| Owner Name | COSTCO WHOLESALE CORP |
| Street | 999 LAKE DR |
| City | ISSAQUAH |
| State | WA |
| Zip Code | 98027-8990 |
| Region | Northwest Mountain |
| County | King County |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 2021-05-21 |
| Last Action Date | 2021-05-21 |
| Expiration Date | 2028-05-31 |
| Status | Valid Registration |
| Mode S Code | 53112231 |
| Mode S Code Hex | AC9499 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N91CW.
| Tail Number / N-Number | N91CW |
| Manufacturer | CESSNA |
| Model | T303 |
| Manufacturer's Serial Number | T30300123 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| County | King County |
| Last Status | N-Number Assigned – but has not yet been registered |
| Cancellation Date | 1990-07-31 |