Pax feedback to Staff(LKS) there was a panel dislodged in the train and almost hit him. Staff(JKN) c hecked and confirmed the gangway ceiling panel was dislodgedin between car 2521 and 2522. Pax feedback to Staff(LKS) th  ~~~~~ Checked and found gangway panel stroed at cba 3521. Checked and verified 2522 #2 end panel dislidged due to snap pin missing.Installed gangway panel and gangway screws, testsecurity by shaking gangway panel. N.A/teh am/sharif/05.12.22