FILE PHOTO: The Boeing logo is displayed on a screen, at the New York Stock Exchange (NYSE) in New York, U.S., August 7, 2019. REUTERS/Brendan McDermid

(Reuters) - Boeing BA.N has grounded up to 50 planes globally over cracks, Agence France Presse bit.ly/3238KJC news agency reported on Thursday.

Boeing was not immediately available for comment.

Qantas Airways Ltd QAN.AX and Southwest Airlines Co LUV.N have stepped up checks for structural cracks on Boeing 737 NGs after discovering problems with planes that did not require urgent inspections, Reuters reported, citing airline sources.