| Tail Number / N-Number | N6408D |
| Manufacturer | PIPER |
| Model | L-21A |
| Manufacturer's Serial Number | 18-908 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | 0-290 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 140 hp (104 kW) |
| Average Cruising Speed | 97 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | RUPLE FARMS INC |
| Street | PO BOX 190 |
| City | PLEASANTON |
| State | TX |
| Zip Code | 78064-0190 |
| Region | Southwestern |
| County | Atascosa County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1958-05-02 |
| Certificate Issue Date | 1990-06-15 |
| Last Action Date | 2020-06-16 |
| Expiration Date | 2027-10-31 |
| Status | Valid Registration |
| Mode S Code | 52064257 |
| Mode S Code Hex | A868AF |