| Tail Number / N-Number | N57855 |
| Manufacturer | BOEING |
| Model | 757-324 |
| Year Built | 2004 |
| Manufacturer's Serial Number | 32814 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 275 seats |
| Weight Class | CLASS 3 (20,000+ pounds gross take off weight) |
| Engine Manufacturer | ROLLS-ROYC |
| Engine Model | RB-211 SERIES |
| Engine Type | Turbo-fan |
| Number of Engines | 2 engines |
| Thrust per Engine | 22,000 pounds-force (97.9 kN) |
| Total Thrust | 44,000 pounds-force (195.7 kN) |
| Type of Registrant | Corporation |
| Owner Name | UNITED AIRLINES INC |
| Street | ATTN TREASURER WILLIS TOWER 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 | 2004-01-09 |
| Certificate Issue Date | 2004-01-12 |
| Last Action Date | 2021-11-30 |
| Expiration Date | 2029-04-30 |
| Status | Valid Registration |
| Mode S Code | 51667506 |
| Mode S Code Hex | A76F46 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N57855.
| Tail Number / N-Number | N57855 |
| Manufacturer | PIPER |
| Model | PA-36-300 |
| Manufacturer's Serial Number | 36-7760026 |
| Aircraft Type | Fixed wing single engine |
| 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 | 1 engine |
| Average Cruising Speed | 113 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | B O C ENTERPRISES INC |
| Street | PO BOX 580 |
| City | NEW ROADS |
| State | LA |
| Zip Code | 70760 |
| Region | Southwestern |
| County | Cook County |
| Certificate Issue Date | 1977-07-20 |
| Last Status | Valid Registration |
| Cancellation Date | 1981-12-24 |