# N56ST: 1975 Orloff PITTS SPECIAL S-1C, registration cancelled 2013-02-12

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: February 12, 2013
- Status when cancelled: Second triennial form not returned
- Airframe: [Orloff PITTS SPECIAL S-1C](https://openairdocs.org/model/orloff-pitts-special-s-1c) (registry code 7221101)
- Engine: [Lycoming 0-290 series](https://openairdocs.org/engine/lycoming-0-290-series) (registry code 41506)
- Data sheets: [TCDS E-229](https://openairdocs.org/tcds/E-229) (OpenAirDocs)
- Serial number: S-1C
- Year built: 1975
- Type of aircraft: Fixed wing single engine
- Engine type: 4 cycle
- Airworthiness: Experimental, amateur built
- Airworthiness date: March 10, 1980
- Certificate issued: January 23, 1984
- Last registry action: March 6, 2008
- Mode S code: A72633
- Owner when cancelled: [Lewis University](https://openairdocs.org/faa-owner/LEWIS%20UNIVERSITY)
- Location: [Romeoville, IL](https://openairdocs.org/faa-place/IL/Romeoville)
- Owner type: Corporation
- Owner's area on the map: 41.5930° N, 88.0516° W: Placed by OpenAirDocs at the center of ZIP code 60441, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N56ST
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=56ST
- Page: https://openairdocs.org/deregistered/N56ST-2013-02-12

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 Orloff PITTS SPECIAL S-1C: https://openairdocs.org/model/orloff-pitts-special-s-1c.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 CHI81DEE52](https://openairdocs.org/ntsb/CHI81DEE52), Sep 6, 1981: Pitts S1C (N56ST), Lockport, IL, substantial damage

## 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 19810906055839A](https://openairdocs.org/incident/19810906055839A), Sep 6, 1981: Amtrpt PITTSSPECS1C (N56ST), Lockport, IL, Substantial damage. Pilot lost directinal control on soft, sod runway. Veered off runway into soybeans and flipped over.

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