Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N999SQ.
| Tail Number / N-Number | N999SQ |
| Manufacturer | DOUGLAS |
| Model | DC-6B |
| Year Built | 1951 |
| Manufacturer's Serial Number | 43274 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 96 seats |
| Weight Class | CLASS 3 (20,000+ pounds gross take off weight) |
| Engine Manufacturer | P & W |
| Engine Model | R-2800 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 4 engines |
| Horsepower per Engine | 2,000 hp (1,492 kW) |
| Total Horsepower | 8,000 hp (5,968 kW) |
| Average Cruising Speed | 216 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | EVERTS AIR FUEL INC |
| Street | PO BOX 60908 |
| City | FAIRBANKS |
| State | AK |
| Zip Code | 99706 |
| Country | US |
| Airworthiness Classification | Restricted |
| Airworthiness Date | 1976-02-17 |
| Certificate Issue Date | 1994-02-24 |
| Last Action Date | 2009-03-17 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 2010-10-07 |
| Mode S Code | 53372661 |
| Mode S Code Hex | ADF5B1 |