Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N604X.
| Tail Number / N-Number | N604X |
| Manufacturer | SHULTZ JEFFREY D |
| Model | SONEX |
| Year Built | 2006 |
| Manufacturer's Serial Number | 604 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | AMA/EXPR |
| Engine Model | UNKNOWN ENG |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | SHULTZ JEFFREY D |
| Street | 14405 HOWARD LN |
| City | DIXON |
| State | MO |
| Zip Code | 65459-7566 |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2006-09-27 |
| Certificate Issue Date | 2006-07-20 |
| Last Action Date | 2009-07-21 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 2009-12-14 |
| Mode S Code | 51754050 |
| Mode S Code Hex | A7D828 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N604X.
| Tail Number / N-Number | N604X |
| Manufacturer | SIKORSKY |
| Model | S-55B |
| Manufacturer's Serial Number | 55459 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 12 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 71 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | TRANS ALASKA HELICOPTERS INC |
| Street | 3700 RAINER AVE SOUTH |
| City | SEATTLE |
| State | WA |
| Zip Code | 98144 |
| Region | Northwest Mountain |
| Certificate Issue Date | 1972-03-08 |
| Last Status | Valid Registration |
| Cancellation Date | 1975-12-22 |
| Mode S Code | 51754050 |
| Mode S Code Hex | A7D828 |