| Tail Number / N-Number | N3742R |
| Manufacturer | BALLOON WORKS |
| Model | FIREFLY 7 |
| Manufacturer's Serial Number | F7-115 |
| 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) |
| Number of Engines | 0 engines |
| Average Cruising Speed | 63 miles per hour |
| Type of Registrant | Individual |
| Owner Name | MAIER CRAIG S |
| Street | 4818 KENNETH DR |
| City | CRYSTAL LAKE |
| State | IL |
| Zip Code | 60014-6332 |
| Region | Great Lakes |
| County | McHenry County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1983-12-14 |
| Certificate Issue Date | 2018-06-22 |
| Last Action Date | 2021-03-02 |
| Expiration Date | 2028-06-30 |
| Status | Valid Registration |
| Mode S Code | 51042525 |
| Mode S Code Hex | A44555 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N3742R.
| Tail Number / N-Number | N3742R |
| Manufacturer | CESSNA |
| Model | 172H |
| Manufacturer's Serial Number | 17255542 |
| 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 | 105 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | KARLS FLYING SERVICE |
| Street | PO BOX 607 |
| City | LINCOLN |
| State | CA |
| Zip Code | 95648 |
| Region | Western-Pacific |
| County | McHenry County |
| Certificate Issue Date | 1967-11-21 |
| Last Status | Valid Registration |
| Cancellation Date | 1970-12-31 |