| Tail Number / N-Number | N18921 |
| Manufacturer | RYAN AERONAUTICAL |
| Model | ST-A SPECIAL |
| Manufacturer's Serial Number | 339 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | MENASCO |
| Engine Model | SUP PIRT D4B |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 160 hp (119 kW) |
| Average Cruising Speed | 92 miles per hour |
| Type of Registrant | Individual |
| Owner Name | SALE REPORTED |
| Street | 2800 STERLING COVE DR |
| City | LAS VEGAS |
| State | NV |
| Zip Code | 89128-7729 |
| Region | Western-Pacific |
| County | Clark County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1956-05-04 |
| Last Action Date | 2022-12-31 |
| Status | Sale reported |
| Mode S Code | 50262323 |
| Mode S Code Hex | A164D3 |