| Tail Number / N-Number | N4121B |
| Type of Reservation | 2 year hold for canceled N-numbers |
| Reserving Party Name | CANCELLED/NOT ASSIGNED |
| Date Reserved | 2021-07-13 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N4121B.
| Tail Number / N-Number | N4121B |
| Manufacturer | AERO COMMANDER |
| Model | 520 |
| Year Built | 1952 |
| Manufacturer's Serial Number | 520-24 |
| 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-435C&D SER |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 260 hp (194 kW) |
| Total Horsepower | 520 hp (388 kW) |
| Average Cruising Speed | 147 miles per hour |
| Type of Registrant | Government |
| Owner Name | TARRANT COUNTY JUNIOR COLLEGE |
| Street | 1500 HOUSTON ST |
| City | FT WORTH |
| State | TX |
| Zip Code | 76102 |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1955-12-29 |
| Certificate Issue Date | 1985-10-25 |
| Last Action Date | 2018-07-17 |
| Last Status | Second Notice for Registration Renewal |
| Cancellation Date | 2021-07-13 |