Hi there
In summer we regularly have to do flap 15 landings, the old 200 needs all the help it can get when she's heavy into JNB. The only change in procedure is to use the 'flap inhibid' switch, otherwise you wake up quickly with the GPWS screaming at you. We do no special checks or anything afterwards, it does not even get mentioned in the teg log, but one obviously have to keep an eye on brake cooling. She also uses quite a bit more runway than with a flap 30.