| Tail Number / N-Number | N684S |
| Manufacturer | CESSNA |
| Model | T207 |
| Year Built | 1969 |
| Manufacturer's Serial Number | 20700147 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 6 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | TSIO-520 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 300 hp (224 kW) |
| Average Cruising Speed | 67 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | SECOND WIND AVIATION CORP |
| Street | 805 SUNDAY DR |
| City | FRIDAY HARBOR |
| State | WA |
| Zip Code | 98250-7300 |
| Region | Northwest Mountain |
| County | San Juan County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1994-05-27 |
| Certificate Issue Date | 2017-05-22 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-05-31 |
| Status | Valid Registration |
| Mode S Code | 52211643 |
| Mode S Code Hex | A913A3 |