Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N4057A.
| Tail Number / N-Number | N4057A |
| Manufacturer | BALLOON WORKS |
| Model | FIREFLY 7 |
| Year Built | 1981 |
| Manufacturer's Serial Number | 10112 |
| Aircraft Type | Balloon |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | NONE |
| Engine Model | NONE |
| Number of Engines | 0 engines |
| Average Cruising Speed | 63 miles per hour |
| Type of Registrant | Individual |
| Owner Name | HOFFMAN ROBERT |
| Street | 28049 LAKE VIEW CIRCLE |
| City | MCHENRY |
| State | IL |
| Zip Code | 60050 |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1981-08-11 |
| Certificate Issue Date | 1989-08-10 |
| Last Action Date | 1998-07-31 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2012-11-15 |
| Mode S Code | 51141202 |
| Mode S Code Hex | A4C282 |