Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N4031T.
| Tail Number / N-Number | N4031T |
| Manufacturer | HILLER |
| Model | UH-12E |
| Year Built | 1981 |
| Manufacturer's Serial Number | 5172 |
| 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 | HILLER AVIATION |
| Street | 2075 W SCRANTON AVE |
| City | PORTERVILLE |
| State | CA |
| Zip Code | 93257 |
| Region | Western-Pacific |
| Last Status | Valid Registration |
| Cancellation Date | 1981-06-29 |
| Exported To | ARGENTINA |
| Mode S Code | 51135123 |
| Mode S Code Hex | A4BA53 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N4031T.
| Tail Number / N-Number | N4031T |
| Manufacturer | ADAMS BALLOON |
| Model | A55S |
| Manufacturer's Serial Number | 123 |
| Aircraft Type | Balloon |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 0 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 0 engines |
| Average Cruising Speed | 30 miles per hour |
| Type of Registrant | Individual |
| Owner Name | SALE REPORTED |
| Street | XXXX |
| City | NONE |
| State | OK |
| Zip Code | 73125 |
| Country | US |
| Last Action Date | 2007-01-12 |
| Last Status | Sale Reported – Pending Cancellation |
| Cancellation Date | 2013-04-22 |
| Mode S Code | 51135123 |
| Mode S Code Hex | A4BA53 |