TC reported his A side wiper top assembly was dislodged. Rear T407 Line clear and confirm no broken wiper found. ~~~~~ TC reported his A side wiper top assembl     Check and found #3610-A/S wiper dislodged due to a broken rivet.Re-installed rivet,security check ok.Performed functional test for wiper,satis. Done by Arthur Sam. 03/01/22