# N173DL: 1985 Dupont/Dupont/Lehnert PITTS S1-C, registration cancelled 2007-08-21

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: August 21, 2007
- Status when cancelled: Triennial form not returned
- Airframe: [Dupont/Dupont/Lehnert PITTS S1-C](https://openairdocs.org/model/dupont-dupont-lehnert-pitts-s1-c) (registry code 722111A)
- 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: 173-H
- Year built: 1985
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: August 30, 1985
- Certificate issued: August 17, 1985
- Last registry action: June 20, 2006
- Mode S code: A124A8
- Owners when cancelled: [Dupont Bayard P](https://openairdocs.org/faa-owner/DUPONT%20BAYARD%20P), [Dupont Stephen](https://openairdocs.org/faa-owner/DUPONT%20STEPHEN), [Lehnert Roger J](https://openairdocs.org/faa-owner/LEHNERT%20ROGER%20J)
- Location: [Toughkenamon, PA](https://openairdocs.org/faa-place/PA/Toughkenamon)
- Owner type: Partnership
- Owner's area on the map: 39.8293° N, 75.7512° W: Placed by OpenAirDocs at the center of ZIP code 19374, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N173DL
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=173DL
- Page: https://openairdocs.org/deregistered/N173DL-2007-08-21

From the FAA registry file of October 29, 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 Dupont/Dupont/Lehnert PITTS S1-C: https://openairdocs.org/model/dupont-dupont-lehnert-pitts-s1-c.md

## Other aircraft with N173DL

- [Cancelled 2024-07-29](https://openairdocs.org/deregistered/N173DL-2024-07-29): Sportine Aviacija IR Ko LAK-17B FES, S/N 221, built 2013. Exported to Canada. Owner: [Ledford David](https://openairdocs.org/faa-owner/LEDFORD%20DAVID), [Haines City, FL](https://openairdocs.org/faa-place/FL/Haines%20City)

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