Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N4172B.
| Tail Number / N-Number | N4172B |
| Manufacturer | AERO COMMANDER |
| Model | 520 |
| Year Built | 1953 |
| Manufacturer's Serial Number | 520-78 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 5 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | GO-435 |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 210 hp (157 kW) |
| Total Horsepower | 420 hp (313 kW) |
| Average Cruising Speed | 147 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | NATIONAL FINANCING CORP |
| Street | PO BOX 1922 |
| City | WILMINGTON |
| State | DE |
| Zip Code | 19899-1922 |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1955-07-23 |
| Certificate Issue Date | 1975-02-24 |
| Last Action Date | 2007-10-31 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2014-10-06 |
| Mode S Code | 51170301 |
| Mode S Code Hex | A4F0C1 |