Sent_en: 2zh Qantas has replaced at least 14 engines, and modifications have been made to Trent 900s used by two other companies, Lufthansa and Singapore Airlines.
Sent_yy: 澳航已经更换了至少14台发动机，另外两家公司汉莎航空和新加坡航空也对Trent900进行了改装。