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Abstract
This research examines the Mach Airspeed Warning System on aircraft at PT. Batam
Aero Technic as a hangar or aircraft maintenance service provider registered with the
Ministry of Transportation. The Mach airspeed warning system supports an aural
warning system to help turn on the aircraft when the aircraft is in a condition exceeding
or approaching the airspeed limit which will later enter the Mach speed. The research
method used is descriptive and qualitative. Beginning with the experience of any
consequences related to the Mach Airspeed Warning System, then presenting solutions to
the potential hazards carried out by the author so that these potential hazards can be
reduced. The results of the study found 4 causes that made errors in Mach Airspeed.