| Tail Number / N-Number | N899W |
| Manufacturer | ASHLEY |
| Model | SP-5 |
| Manufacturer's Serial Number | 1H |
| 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 | MILW PARTS |
| Engine Model | TANK VSER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 115 hp (86 kW) |
| Average Cruising Speed | 85 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | NIAGARA AEROSPACE MUSEUM |
| Street | NIAGARA FALLS INTL AIRPORT 9990 PORTER RD |
| City | NIAGARA FALLS |
| State | NY |
| Zip Code | 14304-1646 |
| Region | Eastern |
| County | Niagara County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1998-06-12 |
| Certificate Issue Date | 2013-04-25 |
| Last Action Date | 2022-03-18 |
| Expiration Date | 2029-04-30 |
| Status | Valid Registration |
| Mode S Code | 53064267 |
| Mode S Code Hex | AC68B7 |