Sihombing AW, Caesar Akbar M. A MACH AIRSPEED WARNING SYSTEM A MACH AIRSPEED WARNING SYSTEM IN COCKPIT. J. Penelit. Poltekbang Surabaya [Internet]. 2022Nov.9 [cited 2026Aug.14];7(3):224-3. Available from: https://ejournal.poltekbangsby.ac.id/index.php/jurnalpenelitian/article/view/1116