| Tail Number / N-Number | N477BH |
| Manufacturer | ROBERT H HAMMER |
| Model | L4X |
| Manufacturer's Serial Number | 1 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | HAMMER ROBERT H |
| Street | 4723 110TH AVE NE |
| City | KIRKLAND |
| State | WA |
| Zip Code | 98033-7726 |
| Region | Northwest Mountain |
| County | King County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2016-05-02 |
| Certificate Issue Date | 2014-09-29 |
| Last Action Date | 2020-07-06 |
| Expiration Date | 2027-09-30 |
| Status | Valid Registration |
| Mode S Code | 51355474 |
| Mode S Code Hex | A5DB3C |