Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N56ST.
| Tail Number / N-Number | N56ST |
| Manufacturer | ORLOFF |
| Model | PITTS SPECIAL S-1C |
| Year Built | 1975 |
| Manufacturer's Serial Number | S-1C |
| 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 | 0-290 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 140 hp (104 kW) |
| Average Cruising Speed | 108 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | LEWIS UNIVERSITY |
| Street | ROUTE 53 |
| City | ROMEOVILLE |
| State | IL |
| Zip Code | 60441 |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1980-03-10 |
| Certificate Issue Date | 1984-01-23 |
| Last Action Date | 2008-03-06 |
| Last Status | Second Triennial Aircraft Registration Form has been mailed and has not been returned by the Post Office |
| Cancellation Date | 2013-02-12 |
| Mode S Code | 51623063 |
| Mode S Code Hex | A72633 |