KE701 came in and scratched the base of its engine at while landing at Narita. Airport closed for 20min to inspect the runway, no problems found, aircraft cleared to depart back to Seoul
Good on the NRT airport authorities to check on FODs. About 6 or 7 years ago, a KAL B744 pranged the engine on landing and the skipper kept quiet about it after the walkaround for the return flight hoping that it will be foisted onto the next unfortunate guy! Unfortunately this piece of work was an expat!