Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N1639M.
| Tail Number / N-Number | N1639M |
| Manufacturer | BOEING |
| Model | E75 |
| Manufacturer's Serial Number | 75-8230 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 93 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | ROBERTS FLYING SERVICE |
| Street | P O BOX 204 |
| City | SOUTH BAY |
| State | FL |
| Zip Code | 32670 |
| Region | Southern |
| Certificate Issue Date | 1950-10-09 |
| Last Status | Valid Registration |
| Cancellation Date | 1952-02-26 |
| Mode S Code | 50200162 |
| Mode S Code Hex | A10072 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N1639M.
| Tail Number / N-Number | N1639M |
| Manufacturer | CESSNA |
| Model | A185E |
| Year Built | 1970 |
| Manufacturer's Serial Number | 18501846 |
| 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 | CESSNA AIRCRAFT COMPANY |
| Street | 5800 E PAWNEE ROAD |
| City | WICHITA |
| State | KS |
| Zip Code | 67209 |
| Region | Central |
| Last Status | Valid Registration |
| Cancellation Date | 1971-12-01 |
| Exported To | CANADA |
| Mode S Code | 50200162 |
| Mode S Code Hex | A10072 |