| Tail Number / N-Number | N6603M |
| Manufacturer | STINSON |
| Model | 108-3 |
| Year Built | 1948 |
| Manufacturer's Serial Number | 108-4603 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | FRANKLIN |
| Engine Model | 6A4165 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 165 hp (123 kW) |
| Average Cruising Speed | 94 miles per hour |
| Type of Registrant | Co-Ownership |
| Owner Name | POULSEN GLEN F |
| Other Names |
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| Street | PO BOX 2008 |
| City | OLYMPIC VALLEY |
| State | CA |
| Zip Code | 96146-2008 |
| Region | Western-Pacific |
| County | Placer County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1955-11-03 |
| Certificate Issue Date | 2004-04-15 |
| Last Action Date | 2022-08-22 |
| Expiration Date | 2030-01-31 |
| Status | Valid Registration |
| Mode S Code | 52133406 |
| Mode S Code Hex | A8B706 |