Staging copy. The live site is at https://staging.data.eflight.com.
eFlight RegistryFAA data, updated daily
Registered aircraft · FAA record as of September 25, 2026
N2251U

Boeing 777-300ER

Valid Illinois

N2251U is a Boeing 777-300ER, a fixed-wing airplane with more than one motor with turbofan engines, built in 2020. It has 552 seats. It is registered to United Airlines INC, a corporation in Chicago, Illinois. The registration is valid: it was issued on January 29, 2020 and expires on January 31, 2030. It holds a standard airworthiness certificate for transport, dated January 28, 2020.

Aircraft

Maker
Boeing
Model
777-300ER
Serial number
66591
Type
Fixed-wing, multi-engine
Power
Turbofan, 2 motors · Ge GE90-115B · 115,540 lb thrust
Seats
552
Year built
2020
Transponder code
A1F622 (octal 50373042)

Registration

Status
Valid registration
Certificate issued
January 29, 2020
Expires
January 31, 2030
Last FAA action
November 3, 2025
Airworthiness
Standard · Transport · January 28, 2020
FAA region
Great Lakes
FAA record id
01310617

Owner as the FAA publishes it

Name
United Airlines INC
Type
Corporation
Address
233 S Wacker Dr
Chicago, IL 60606-7147

Owners can ask the FAA to withhold their name and address from public files. When they do, those fields are blank here as well. How that works.

Documents on file 0

No bills of sale, loans or other documents are indexed against this tail number.

Earlier use of this number 1

1989-06-19Brantly B-2B · Triennial registration form was mailed and has not been returned by the Post Office

Source: FAA Civil Aviation Registry, Releasable Aircraft Database, September 25, 2026. See this record on the FAA site · This record as data