Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N3990B.
| Tail Number / N-Number | N3990B |
| Manufacturer | BOEING |
| Model | E75 |
| Manufacturer's Serial Number | 75-5223 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 93 miles per hour |
| Type of Registrant | Individual |
| Owner Name | IRWIN FRANK A |
| Street | 2730 MARLBOUROUGH DRIVE |
| City | SAN ANTONIO |
| State | TX |
| Zip Code | 78230 |
| Region | Southwestern |
| Certificate Issue Date | 1965-02-17 |
| Last Status | Valid Registration |
| Cancellation Date | 1970-06-23 |
| Mode S Code | 51123222 |
| Mode S Code Hex | A4A692 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N3990B.
| Tail Number / N-Number | N3990B |
| Manufacturer | LAMBERT ULTRALIGHTS |
| Model | STARFLIGHT DBL 1000 |
| Manufacturer's Serial Number | 5006 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Last Action Date | 1983-07-09 |
| Last Status | N-Number assigned, has not been registered and is pending cancellation |
| Cancellation Date | 2011-03-15 |
| Mode S Code | 51123222 |
| Mode S Code Hex | A4A692 |