| Tail Number / N-Number | N31DH |
| Manufacturer | HOELZEN DONALD H |
| Model | EAA ACRO II |
| Year Built | 1982 |
| Manufacturer's Serial Number | DH-2 |
| 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) |
| Engine Manufacturer | LYCOMING |
| Engine Model | I0360 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Type of Registrant | Individual |
| Owner Name | HOELZEN ROBERT D |
| Street | 17663 SE 296TH ST |
| City | KENT |
| State | WA |
| Zip Code | 98042-5712 |
| Region | Northwest Mountain |
| County | Snohomish County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1982-09-02 |
| Certificate Issue Date | 1997-07-29 |
| Last Action Date | 2020-05-28 |
| Expiration Date | 2027-10-31 |
| Status | Valid Registration |
| Mode S Code | 50642313 |
| Mode S Code Hex | A344CB |