Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N111BY.
| Tail Number / N-Number | N111BY |
| Manufacturer | CESSNA |
| Model | 421B |
| Year Built | 1974 |
| Manufacturer's Serial Number | 421B0596 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 8 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 172 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | LONGAIR INC |
| Street | P O BOX 207 |
| City | LAREDO |
| State | TX |
| Zip Code | 78040 |
| Region | Southwestern |
| Country | US |
| Certificate Issue Date | 1977-12-06 |
| Last Status | Valid Registration |
| Cancellation Date | 1979-05-24 |
| Exported To | MEXICO |
| Mode S Code | 50030032 |
| Mode S Code Hex | A0301A |