Airports Database major updates

08 April 2019 - ORAA AL-ASAD - changed IATA from OAA to IQA

05 April 2019 - Removed IATA from RPVT https://en.wikipedia.org/wiki/Tagbilaran_Airport  On November 27, 2018, the airport was closed for scheduled passenger services, TAG iata moved to airport RPSP

05 April 2019 - changed IATA for Istanbul Grand = LTFM to IST and Istanbul Ataturk = LTBA to ISL https://en.wikipedia.org/wiki/Istanbul_Atat%C3%BCrk_Airport  On April 6, 2019, Atatürk's IST IATA airport code was inherited by Istanbul Airport and Atatürk Airport was assigned the code ISL after the transfer of scheduled passenger activities to the new airport was completed