| Tail Number / N-Number | N4603M |
| Manufacturer | DON E ASHLEY |
| Model | RIVER CUB |
| Year Built | 2019 |
| Manufacturer's Serial Number | 0865 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | O-320-A2B |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 150 hp (112 kW) |
| Type of Registrant | Individual |
| Owner Name | ASHLEY DON E |
| Street | PO BOX 575 |
| City | WILLOW |
| State | AK |
| Zip Code | 99688-0575 |
| Region | Alaskan |
| County | Matanuska-Susitna Borough |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2019-01-06 |
| Certificate Issue Date | 2018-12-21 |
| Last Action Date | 2021-07-14 |
| Expiration Date | 2028-12-31 |
| Status | Valid Registration |
| Mode S Code | 51316150 |
| Mode S Code Hex | A59C68 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N4603M.
| Tail Number / N-Number | N4603M |
| Manufacturer | PIPER |
| Model | PA-11 |
| Year Built | 1947 |
| Manufacturer's Serial Number | 11-107 |
| 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) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | C90 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 95 hp (71 kW) |
| Average Cruising Speed | 67 miles per hour |
| Type of Registrant | Individual |
| Owner Name | SALE REPORTED |
| Street | P. O. BOX 25082 |
| City | OKLAHOMA CITY |
| State | OK |
| Zip Code | 73125 |
| County | Matanuska-Susitna Borough |
| Country | US |
| Airworthiness Classification | Restricted |
| Last Action Date | 1977-01-14 |
| Last Status | Sale reported |
| Cancellation Date | 1977-12-06 |
| Exported To | CANADA |