| Tail Number / N-Number | N921 |
| Manufacturer | NORTH AMERICAN/AERO CLASSICS |
| Model | P-51D |
| Year Built | 1945 |
| Manufacturer's Serial Number | 45-11507 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | PKRD-ROLL |
| Engine Model | V1650 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 1,490 hp (1,112 kW) |
| Average Cruising Speed | 277 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | WORLDS GREATEST AIRCRAFT COLLECTION INC |
| Street | 1400 BROADWAY BLVD SE |
| City | POLK CITY |
| State | FL |
| Zip Code | 33868-9109 |
| Region | Southern |
| County | Polk County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Limited |
| Airworthiness Date | 1975-01-09 |
| Certificate Issue Date | 1983-01-13 |
| Last Action Date | 2022-01-03 |
| Expiration Date | 2029-04-30 |
| Status | Valid Registration |
| Mode S Code | 53140740 |
| Mode S Code Hex | ACC1E0 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N921.
| Tail Number / N-Number | N921 |
| Manufacturer | WACO |
| Model | GXE |
| Manufacturer's Serial Number | 977 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 3 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 119 miles per hour |
| Type of Registrant | Individual |
| Owner Name | HOBBIE R M JR |
| Street | PO BOX 824 |
| City | MONTGOMERY |
| State | AL |
| Zip Code | 36043 |
| Region | Southern |
| County | Polk County |
| Certificate Issue Date | 1932-01-06 |
| Last Status | Valid Registration |
| Cancellation Date | 1934-07-11 |