| Tail Number / N-Number | N9021 |
| Manufacturer | TRAVEL AIR |
| Model | 4000 |
| Year Built | 1929 |
| Manufacturer's Serial Number | 821 |
| 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) |
| Engine Manufacturer | WRIGHT |
| Engine Model | WWJ SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 220 hp (164 kW) |
| Average Cruising Speed | 79 miles per hour |
| Type of Registrant | Individual |
| Owner Name | DAACKE MICHAEL L |
| Street | 236 GLEN AVE |
| City | GLEN ROCK |
| State | PA |
| Zip Code | 17327-1351 |
| Region | Eastern |
| County | York County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1957-07-30 |
| Certificate Issue Date | 1996-09-19 |
| Last Action Date | 2020-12-15 |
| Expiration Date | 2028-04-30 |
| Status | Valid Registration |
| Mode S Code | 53074425 |
| Mode S Code Hex | AC7915 |