| Tail Number / N-Number | N603M |
| Manufacturer | DEHAVILLAND |
| Model | DHC-6 TWIN OTTER |
| Manufacturer's Serial Number | 209 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 16 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 123 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | SALE REPORTED |
| Street | P. O. BOX 25082 |
| City | OKLAHOMA CITY |
| State | OK |
| Zip Code | 73125 |
| Region | Southwestern |
| County | Oklahoma County |
| Country | US |
| Fractional Ownership | No |
| Last Action Date | 1977-01-14 |
| Status | Sale reported |
| Mode S Code | 51751567 |
| Mode S Code Hex | A7D377 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N603M.
| Tail Number / N-Number | N603M |
| Manufacturer | FLEET |
| Model | 2 |
| Manufacturer's Serial Number | 179 |
| 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 | 78 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | POCHONTAS AIR TRANSPORT CORP |
| Street | GENERAL DELIVERY |
| City | BLUEFIELD |
| State | WV |
| Zip Code | 24925 |
| Region | Eastern |
| County | Oklahoma County |
| Last Status | Valid Registration |
| Cancellation Date | 1930-11-24 |