| Tail Number / N-Number | N1203M |
| Manufacturer | BOEING |
| Model | A75N1(PT17) |
| Year Built | 1943 |
| Manufacturer's Serial Number | 75-8167 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | W670 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 250 hp (187 kW) |
| Average Cruising Speed | 93 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | JOHN WILLIAMS CORP |
| Street | 28264 N GILMER RD |
| City | MUNDELEIN |
| State | IL |
| Zip Code | 60060-9538 |
| Region | Great Lakes |
| County | Lake County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1987-11-16 |
| Certificate Issue Date | 2013-11-22 |
| Last Action Date | 2022-09-11 |
| Expiration Date | 2029-11-30 |
| Status | Valid Registration |
| Mode S Code | 50053177 |
| Mode S Code Hex | A0567F |