| Tail Number / N-Number | N890RM |
| Manufacturer | WILLIAMS THEODORE S |
| Model | PITTS SPECIAL S1S |
| Year Built | 1982 |
| Manufacturer's Serial Number | 1981 |
| 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 | AMA/EXPR |
| Engine Model | UNKNOWN ENG |
| Number of Engines | 1 engine |
| Type of Registrant | LLC |
| Owner Name | PALM AEROBATIC AIRCRAFT LLC |
| Street | 15327 SKYKING DR |
| City | PORT SAINT LUCIE |
| State | FL |
| Zip Code | 34987-2502 |
| Region | Southern |
| County | St. Lucie County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1982-04-21 |
| Certificate Issue Date | 2019-11-05 |
| Last Action Date | 2022-06-08 |
| Expiration Date | 2029-11-30 |
| Status | Valid Registration |
| Mode S Code | 53043327 |
| Mode S Code Hex | AC46D7 |