1998 United Airlines Boeing 737-800 N26210 c/n 28770 Star Alliance at San Francisco Airport 2019. (17crossfeed) Tags: unitedairlines unitedexpress boeing 737 737900 737800 sfo sfoov sanfranciscoairport airport airplane aircraft 17crossfeed claytoneddy landing lufthansa aviation maintenance 777 747 757 767 787 staralliance