Ezaiyuddin, Amirah Eitqan, and Nor Adrian Nor Salim. 2023. “A Study On Aircraft Air-Conditioning System Trainer Model AS-43 For Aeronautical Engineering Student Practice”. Progress in Aerospace and Aviation Technology 3 (2): 8-16. https://penerbit.uthm.edu.my/ojs/index.php/paat/article/view/15011.