Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N511MD.
| Tail Number / N-Number | N511MD |
| Manufacturer | DUFAULT MARK V |
| Model | PITTS S-1D |
| Year Built | 1999 |
| Manufacturer's Serial Number | 52206 |
| 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) |
| Engine Manufacturer | LYCOMING |
| Engine Model | 0-320 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Type of Registrant | Individual |
| Owner Name | DUFAULT MARK V |
| Street | 91 SCHOOL HOUSE RD |
| City | OXFORD |
| State | ME |
| Zip Code | 04270-3112 |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1999-09-07 |
| Certificate Issue Date | 1999-06-11 |
| Last Action Date | 2008-10-01 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2017-05-15 |
| Mode S Code | 51463075 |
| Mode S Code Hex | A6663D |