Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N56421.
| Tail Number / N-Number | N56421 |
| Manufacturer | RYAN AERONAUTICAL |
| Model | ST3KR |
| Year Built | 1941 |
| Manufacturer's Serial Number | 1539 |
| 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 | KINNER |
| Engine Model | R5 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 160 hp (119 kW) |
| Average Cruising Speed | 105 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | FLYING HERITAGE INC |
| Street | 280 ARNETT AVE |
| City | VENTURA |
| State | CA |
| Zip Code | 93003 |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1956-05-18 |
| Certificate Issue Date | 1989-03-27 |
| Last Action Date | 1995-02-06 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2013-04-22 |
| Mode S Code | 51634176 |
| Mode S Code Hex | A7387E |