| Tail Number / N-Number | N6557 |
| Manufacturer | KOZ AERO LLC |
| Model | SOPWITH F1 |
| Manufacturer's Serial Number | 337 |
| Aircraft Type | Fixed wing single engine |
| 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) |
| Number of Engines | 1 engine |
| Type of Registrant | LLC |
| Owner Name | KOZ AERO LLC |
| Street | 938 RIVER ROCK DR NE |
| City | COMSTOCK PARK |
| State | MI |
| Zip Code | 49321-8388 |
| Region | Great Lakes |
| County | Kent County |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 2014-06-25 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-06-30 |
| Status | Valid Registration |
| Mode S Code | 52121232 |
| Mode S Code Hex | A8A29A |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N6557.
| Tail Number / N-Number | N6557 |
| Manufacturer | SCHEMPP-HIRTH |
| Model | CIRRUS |
| Manufacturer's Serial Number | 77 |
| 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 | 0 engines |
| Average Cruising Speed | 60 miles per hour |
| Type of Registrant | Individual |
| Owner Name | WEINHOLD STEVE |
| Street | 141 WEST 376 SOUTH |
| City | VERNAL |
| State | UT |
| Zip Code | 84078 |
| Region | Northwest Mountain |
| County | Kent County |
| Certificate Issue Date | 1982-03-04 |
| Last Status | Valid Registration |
| Cancellation Date | 1982-05-10 |
| Exported To | CANADA |