| Tail Number / N-Number | N106AB |
| Manufacturer | MACDONALD |
| Model | S-20 |
| Year Built | 1972 |
| Manufacturer's Serial Number | 1 |
| 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 | VOLKSWAGEN |
| Engine Model | CONVERSION |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 36 hp (27 kW) |
| Average Cruising Speed | 85 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | PORT TOWNSEND AERO MUSEUM |
| Street | 105 AIRPORT RD |
| City | PORT TOWNSEND |
| State | WA |
| Zip Code | 98368-9716 |
| Region | Northwest Mountain |
| County | Jefferson County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2009-10-01 |
| Certificate Issue Date | 2019-09-11 |
| Last Action Date | 2022-04-14 |
| Expiration Date | 2029-09-30 |
| Status | Valid Registration |
| Mode S Code | 50015400 |
| Mode S Code Hex | A01B00 |