| Tail Number / N-Number | N9477D |
| Manufacturer | PIPER |
| Model | PA-18A 150 |
| Year Built | 1958 |
| Manufacturer's Serial Number | 18-6729 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | 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 | 0-320 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Average Cruising Speed | 97 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | J H MILLER & SON INC |
| Street | 6351 STATE ROUTE 23 |
| City | SAINT JOHN |
| State | WA |
| Zip Code | 99171-9776 |
| Region | Northwest Mountain |
| County | Whitman County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Multiple |
| Airworthiness Date | 1959-03-17 |
| Certificate Issue Date | 2011-02-14 |
| Last Action Date | 2022-11-29 |
| Expiration Date | 2030-02-28 |
| Status | Valid Registration |
| Mode S Code | 53225172 |
| Mode S Code Hex | AD2A7A |