| Tail Number / N-Number | N721SG |
| Manufacturer | CESSNA |
| Model | 206 |
| Year Built | 1964 |
| Manufacturer's Serial Number | 206-0265 |
| 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 | IO 520 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 285 hp (213 kW) |
| Average Cruising Speed | 132 miles per hour |
| Type of Registrant | LLC |
| Owner Name | ALASKA AIR SERVICE LLC |
| Street | 16340 LOWER HARBOR RD STE 502 |
| City | BROOKINGS |
| State | OR |
| Zip Code | 97415-8303 |
| Region | Northwest Mountain |
| County | Curry County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1964-09-30 |
| Certificate Issue Date | 2018-01-25 |
| Last Action Date | 2020-08-25 |
| Expiration Date | 2028-01-31 |
| Status | Valid Registration |
| Mode S Code | 52324332 |
| Mode S Code Hex | A9A8DA |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N721SG.
| Tail Number / N-Number | N721SG |
| Manufacturer | CESSNA |
| Model | 206H |
| Manufacturer's Serial Number | 20608235 |
| 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) |
| Number of Engines | 1 engine |
| Type of Registrant | Corporation |
| Owner Name | CESSNA AIRCRAFT COMPANY |
| Street | PO BOX 7704 |
| City | WICHITA |
| State | KS |
| Zip Code | 67277-7704 |
| County | Curry County |
| Country | US |
| Last Action Date | 2005-03-02 |
| Last Status | Aircraft registered to the manufacturer under their Dealer Certificate |
| Cancellation Date | 2005-03-07 |
| Exported To | BRAZIL |