# N511MD: 1999 Dufault Mark V PITTS S-1D, registration cancelled 2017-05-15

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: May 15, 2017
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Dufault Mark V PITTS S-1D](https://openairdocs.org/model/dufault-mark-v-pitts-s-1d) (registry code 05607LG)
- Engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508)
- Data sheets: [TCDS E-274](https://openairdocs.org/tcds/E-274) (OpenAirDocs)
- Serial number: 52206
- Year built: 1999
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: September 7, 1999
- Certificate issued: June 11, 1999
- Last registry action: October 1, 2008
- Mode S code: A6663D
- Owner when cancelled: [Dufault Mark V](https://openairdocs.org/faa-owner/DUFAULT%20MARK%20V)
- Location: [Oxford, ME](https://openairdocs.org/faa-place/ME/Oxford)
- Owner type: Individual
- Owner's area on the map: 44.1173° N, 70.5275° W: Placed by OpenAirDocs at the center of ZIP code 04270, within about 5 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N511MD
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=511MD
- Page: https://openairdocs.org/deregistered/N511MD-2017-05-15

From the FAA registry file of October 28, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Dufault Mark V PITTS S-1D: https://openairdocs.org/model/dufault-mark-v-pitts-s-1d.md

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB NYC08LA310](https://openairdocs.org/ntsb/NYC08LA310), Sep 9, 2008: Dufault Mark V Pitts S-1D (N511MD), Ridgely, MD, substantial damage, 1 fatal. Probable cause: The pilot's inadequate preflight weather evaluation which resulted in an attempted landing in fog and subsequent impact with terrain.

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20080909844499A](https://openairdocs.org/incident/20080909844499A), Sep 9, 2008: Amtr PITTSS1D (N511MD), Ridgely, MD, Destroyed, 1 fatal. (-23) The aircraft wreckage was found on the airport after the pilot was reported missing. The aircraft was found approximately 200 hundred yards from the…

## Other aircraft with N511MD

- [Registered now](https://openairdocs.org/aircraft/N511MD): Cessna 510, S/N 510-0279, built 2009

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