Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N1685M.
| Tail Number / N-Number | N1685M |
| Manufacturer | CESSNA |
| Model | A185E |
| Year Built | 1971 |
| Manufacturer's Serial Number | 18501872 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 6 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 125 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | AVIATION ACTIVITIES INC |
| Street | ROUTE 6 PORTER COUNTY AIRPORT |
| City | VALPARAISO |
| State | IN |
| Zip Code | 46383 |
| Region | Great Lakes |
| Country | US |
| Certificate Issue Date | 1971-06-02 |
| Last Status | Valid Registration |
| Cancellation Date | 1971-06-02 |
| Exported To | CANADA |
| Mode S Code | 50211171 |
| Mode S Code Hex | A11279 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N1685M.
| Tail Number / N-Number | N1685M |
| Manufacturer | CURTISS WRIGHT |
| Model | C-46F |
| Year Built | 1949 |
| Manufacturer's Serial Number | 22396 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 65 seats |
| Weight Class | CLASS 3 (20,000+ pounds gross take off weight) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 180 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | U S AIR FORCE OF THE NATL DEFENSE ESTABLISHMENT |
| Street | ETABLISHMENT OF THE US |
| City | WASHINGTON |
| State | DC |
| Zip Code | 20310 |
| Region | Eastern |
| Certificate Issue Date | 1954-11-30 |
| Last Status | Valid Registration |
| Cancellation Date | 1954-11-30 |
| Mode S Code | 50211171 |
| Mode S Code Hex | A11279 |