What is the fine-grained topic of the following text: SYLMAR, Calif., Oct. 10, 2018 – PPG (NYSE:PPG) today announced that it has received a Supplemental Type Certificate (STC) from the European Aviation Safety Agency (EASA) for its aftermarket glass-faced acrylic windshields for BEECHJET® 400 business jets and their variants. Only return the topic.
PPG receiving a Supplemental Type Certificate for its aftermarket windshields for BEECHJET® 400 business jets.