| Tail Number / N-Number | N21 |
| Type of Reservation | Reserved - no fee |
| Reserving Party Name | FEDERAL AVIATION ADMINISTRATION ASW-280 |
| Street | NATL FLIGHT PROGRAM OVERSIGHT OFC 2221 ALLIANCE BLVD STE 400 |
| City | FT WORTH |
| State | TX |
| Zip Code | 76177-4301 |
| Date Reserved | 2012-11-30 |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N21.
| Tail Number / N-Number | N21 |
| Manufacturer | BOEING |
| Model | 100 |
| Year Built | 1929 |
| Manufacturer's Serial Number | 1142 |
| 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) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 111 miles per hour |
| Type of Registrant | Government |
| Owner Name | U S DEPT OF COMMERCE |
| Street | AERONAUTICS BRANCH GENERAL DELIVERY |
| City | WASHINGTON |
| State | DC |
| Zip Code | 20001 |
| Region | Eastern |
| Country | US |
| Last Status | Valid Registration |
| Cancellation Date | 1931-03-10 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N21.
| Tail Number / N-Number | N21 |
| Manufacturer | FAIRCHILD |
| Model | 24 G |
| Year Built | 1937 |
| Manufacturer's Serial Number | 2924 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 92 miles per hour |
| Type of Registrant | Government |
| Owner Name | CIVIL AERONAUTICS AUTHORITY |
| Street | GENERAL DELIVERY |
| City | WASHINGTON |
| State | DC |
| Zip Code | 20001 |
| Region | Eastern |
| Country | US |
| Last Status | Valid Registration |
| Cancellation Date | 1947-03-12 |