| Tail Number / N-Number | N12126 |
| Manufacturer | EMBRAER |
| Model | EMB-145XR |
| Year Built | 2003 |
| Manufacturer's Serial Number | 145693 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 55 seats |
| Weight Class | CLASS 2 (12,500 - 19,999 pounds gross take off weight) |
| Engine Manufacturer | ROLLS-ROYC |
| Engine Model | AE3007 SER |
| Engine Type | Turbo-fan |
| Number of Engines | 2 engines |
| Thrust per Engine | 6,442 pounds-force (28.7 kN) |
| Total Thrust | 12,884 pounds-force (57.3 kN) |
| Type of Registrant | Corporation |
| Owner Name | UNITED AIRLINES INC |
| Street | 233 S WACKER DR |
| City | CHICAGO |
| State | IL |
| Zip Code | 60606-7147 |
| Region | Great Lakes |
| County | Cook County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2005-02-25 |
| Certificate Issue Date | 2019-07-30 |
| Last Action Date | 2022-03-09 |
| Expiration Date | 2029-07-31 |
| Status | Valid Registration |
| Mode S Code | 50055046 |
| Mode S Code Hex | A05A26 |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N12126.
| Tail Number / N-Number | N12126 |
| Manufacturer | MCDANIEL-BENSEN |
| Model | GYROCOPTER B-8M |
| Year Built | 1966 |
| Manufacturer's Serial Number | WAM-0001 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 45 miles per hour |
| Type of Registrant | Individual |
| Owner Name | HOLEMAN LUTHER L |
| Street | RT 3 BOX 277 |
| City | GILMER |
| State | TX |
| Zip Code | 75644 |
| Region | Southwestern |
| County | Cook County |
| Country | US |
| Certificate Issue Date | 1971-02-08 |
| Last Status | Valid Registration |
| Cancellation Date | 1980-07-14 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N12126.
| Tail Number / N-Number | N12126 |
| Manufacturer | STINSON |
| Model | U |
| Manufacturer's Serial Number | 9012 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 12 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 3 engines |
| Average Cruising Speed | 90 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | ILOILO NEGROS AIR EXPRESS |
| Street | GENERAL DELIVERY |
| City | ILOILO |
| Zip Code | 5000 |
| County | Cook County |
| Country | PH |
| Certificate Issue Date | 1933-01-14 |
| Last Status | Valid Registration |
| Cancellation Date | 1933-11-15 |