Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N6639U.
| Tail Number / N-Number | N6639U |
| Manufacturer | MOONEY |
| Model | M20D |
| Year Built | 1963 |
| Manufacturer's Serial Number | 134 |
| 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) |
| Engine Manufacturer | LYCOMING |
| Engine Model | O&VO-360 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Average Cruising Speed | 127 miles per hour |
| Type of Registrant | Individual |
| Owner Name | DERICKSON NED W |
| Street | 8847 N CRICKET PL |
| City | TUCSON |
| State | AZ |
| Zip Code | 85743-1207 |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1963-02-06 |
| Certificate Issue Date | 2003-12-06 |
| Last Action Date | 2009-12-15 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2014-11-12 |
| Mode S Code | 52141404 |
| Mode S Code Hex | A8C304 |