| Tail Number / N-Number | N1855U |
| Manufacturer | AMOS S/BOYLES R |
| Model | SEAREY |
| Year Built | 2008 |
| Manufacturer's Serial Number | 1DK398C |
| Aircraft Type | Fixed wing single engine |
| Category | Amphibian |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | ROTAX |
| Engine Model | 912ULS SERIES |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 100 hp (75 kW) |
| Kit Manufacturer | PROGRESSIVE AERODYNE INC |
| Kit Model | SEAREY |
| Type of Registrant | Individual |
| Owner Name | TOPLIFFE BRUCE E |
| Street | 492 DEER RD |
| City | FAWN GROVE |
| State | PA |
| Zip Code | 17321-9448 |
| Region | Eastern |
| County | York County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2008-03-03 |
| Certificate Issue Date | 2010-05-06 |
| Last Action Date | 2022-12-18 |
| Expiration Date | 2030-04-30 |
| Status | Valid Registration |
| Mode S Code | 50253131 |
| Mode S Code Hex | A15659 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N1855U.
| Tail Number / N-Number | N1855U |
| Manufacturer | MCDONNELL-DOUGLAS |
| Model | DC-10-30 |
| Year Built | 1980 |
| Manufacturer's Serial Number | 47837 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 345 seats |
| Weight Class | CLASS 3 (20,000+ pounds gross take off weight) |
| Engine Manufacturer | GE |
| Engine Model | CF6-50 SER |
| Engine Type | Turbo-fan |
| Number of Engines | 3 engines |
| Thrust per Engine | 50,000 pounds-force (222.4 kN) |
| Total Thrust | 150,000 pounds-force (667.2 kN) |
| Average Cruising Speed | 427 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | UNITED AIR LINES INC |
| Street | 1200 E ALGONQUIN RD |
| City | ELK GROVE VILLAGE |
| State | IL |
| Zip Code | 60007 |
| County | York County |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1980-08-01 |
| Certificate Issue Date | 1995-09-12 |
| Last Action Date | 2001-09-18 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 2003-03-24 |