ABSTRACT COMMUNICATION STRATEGY PT ANGKASA PURA II IN IMPLEMENTING THE PEDULILINDUNGI APPLICATION AS ACCESS CHECK-IN CONTROL OF SULTAN SYARIF KASIM II PEKANBARU AIRPORT By: Nadia Zhelvya Supervisor: Dr. Yasir, M.Si Sultan Syarif Kasim II Pekanbaru Airport is one of the airports that implements health document validation rules using the PeduliLindungi application for prospective passengers d…