# N56WS: 1991 Silk William PIETENPOL, registration cancelled 2013-03-21

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: March 21, 2013
- Status when cancelled: Sale reported, canceled
- Airframe: [Silk William PIETENPOL](https://openairdocs.org/model/silk-william-pietenpol) (registry code 704031M)
- Engine: [Lycoming 0-145B series](https://openairdocs.org/engine/lycoming-0-145b-series) (registry code 41502)
- Data sheets: [TCDS TC 210](https://openairdocs.org/tcds/TC%20210) (OpenAirDocs)
- Serial number: 001
- Year built: 1991
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: May 26, 1993
- Last registry action: April 11, 1996
- Mode S code: A72696
- Location: [Williamsport, PA](https://openairdocs.org/faa-place/PA/Williamsport)
- Owner type: Individual
- Owner's area on the map: 41.2400° N, 77.0356° W: Placed by OpenAirDocs: center of Williamsport, PA, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N56WS
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=56WS
- Page: https://openairdocs.org/deregistered/N56WS-2013-03-21

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 Silk William PIETENPOL: https://openairdocs.org/model/silk-william-pietenpol.md

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