| Tail Number / N-Number | N21A |
| Manufacturer | GRUMMAN |
| Model | G-21A |
| Year Built | 1946 |
| Manufacturer's Serial Number | B129 |
| Aircraft Type | Fixed wing multi engine |
| Category | Amphibian |
| Builder Certification | Type Certificated |
| Number of Seats | 8 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | AMA/EXPR |
| Engine Model | UNKNOWN ENG |
| Number of Engines | 2 engines |
| Average Cruising Speed | 150 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | D B AERO INC |
| Street | 3511 SILVERSIDE RD STE 105 |
| City | WILMINGTON |
| State | DE |
| Zip Code | 19810-4902 |
| Region | Eastern |
| County | New Castle County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1998-07-02 |
| Certificate Issue Date | 2011-04-13 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-04-30 |
| Status | Valid Registration |
| Mode S Code | 50333451 |
| Mode S Code Hex | A1B729 |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N21A.
| Tail Number / N-Number | N21A |
| Manufacturer | ANDREW |
| Model | KR-1 |
| Year Built | 1975 |
| Manufacturer's Serial Number | 001GA |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not 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 | 85 miles per hour |
| Type of Registrant | Individual |
| Owner Name | ANDREW GEORGE |
| Street | 1834 S 10TH ST |
| City | MILWAUKEE |
| State | WI |
| Zip Code | 53204 |
| Region | Great Lakes |
| County | New Castle County |
| Country | US |
| Certificate Issue Date | 1975-06-27 |
| Last Status | Valid Registration |
| Cancellation Date | 1999-01-15 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N21A.
| Tail Number / N-Number | N21A |
| Manufacturer | GOODYEAR AIRCRAFT CORP |
| Model | L |
| Year Built | 1943 |
| Manufacturer's Serial Number | L11 |
| Aircraft Type | Blimp/Dirigible |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 7 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 56 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | DOUGLAS LEIGH SPECTACULARS INC |
| Street | 630 FIFTH AVE |
| City | NEW YORK |
| State | NY |
| Zip Code | 10111 |
| Region | Eastern |
| County | New Castle County |
| Certificate Issue Date | 1952-04-10 |
| Last Status | Valid Registration |
| Cancellation Date | 1970-11-23 |