| Tail Number / N-Number | N21WT |
| Manufacturer | CESSNA |
| Model | 421B |
| Year Built | 1973 |
| Manufacturer's Serial Number | 421B0486 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 8 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | GTSIO-520-C |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 340 hp (254 kW) |
| Total Horsepower | 680 hp (507 kW) |
| Average Cruising Speed | 172 miles per hour |
| Type of Registrant | Individual |
| Owner Name | STATION DAVID H |
| Street | 6856 LOS VIENTOS SERENOS |
| City | ESCONDIDO |
| State | CA |
| Zip Code | 92029-5908 |
| Region | Western-Pacific |
| County | San Diego County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1973-11-13 |
| Certificate Issue Date | 2018-01-23 |
| Last Action Date | 2021-01-11 |
| Expiration Date | 2028-01-31 |
| Status | Valid Registration |
| Mode S Code | 50334457 |
| Mode S Code Hex | A1B92F |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N21WT.
| Tail Number / N-Number | N21WT |
| Manufacturer | PIPER |
| Model | PA-23-250 |
| Manufacturer's Serial Number | 27139 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 6 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 150 miles per hour |
| Type of Registrant | Individual |
| Owner Name | CONNOR ROBERT B |
| Street | ROUTE 3 BOX 776 |
| City | ALVARADO |
| State | TX |
| Zip Code | 76009 |
| County | San Diego County |
| Country | US |
| Certificate Issue Date | 1984-01-19 |
| Last Action Date | 1987-02-07 |
| Last Status | A second attempt has been made at mailing a Triennial Aircraft Registration form to the owner with no response |
| Cancellation Date | 1995-06-29 |