United Airlines Boeing 777-222 (N797UA) in the Star Alliance livery, spotted taxiing at San Francisco International Airport.

Seen from a taxiing a321-neo at EWR

This aircraft is powered by Pratt & Whitney PW4090 engines, a variant otherwise known from the high-profile United 328 uncontained engine failure (a sister ship). This airframe is quite representative of United’s long-ha…