| Tail Number / N-Number | N4027T |
| Type of Reservation | Reserved to manufacturer - temporary number |
| Reserving Party Name | BOEING CO |
| Street | 737 LOGAN AVE N |
| City | RENTON |
| State | WA |
| Zip Code | 98057 |
| Date Reserved | 2019-09-27 |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N4027T.
| Tail Number / N-Number | N4027T |
| Manufacturer | HILLER |
| Model | UH-12E |
| Manufacturer's Serial Number | 5079 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 72 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | HELICOPTER PARTS SVC INC |
| Street | 950 N PLANO |
| City | PORTERVILLE |
| State | CA |
| Zip Code | 93257 |
| Country | US |
| Certificate Issue Date | 1992-01-14 |
| Last Action Date | 1992-01-22 |
| Last Status | Valid Registration |
| Cancellation Date | 1995-01-03 |
| Exported To | TAIWAN |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N4027T.
| Tail Number / N-Number | N4027T |
| Manufacturer | BEECH |
| Model | B23 |
| Manufacturer's Serial Number | M-1133 |
| 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) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 116 miles per hour |
| Type of Registrant | Individual |
| Owner Name | ERROL SORENSEN CONSTRUCTION CO |
| Street | 1919 4TH ST SOUTH |
| City | MOOREHEAD |
| State | MN |
| Zip Code | 56560 |
| Region | Great Lakes |
| Certificate Issue Date | 1969-01-31 |
| Last Status | Valid Registration |
| Cancellation Date | 1971-02-09 |