page_title: Subsonic aircraft
hierarchical_section_title: Subsonic aircraft
caption_attribution_description: Czech Air Force Aero L-159
context_page_description: A subsonic aircraft is an aircraft with a maximum speed less than the speed of sound. The term technically describes an aircraft that flies below its critical Mach number, typically around Mach 0.8. All current civil aircraft, including airliners, helicopters and airships, as well as many military types, are subsonic.
context_section_description: A subsonic aircraft is an aircraft with a maximum speed less than the speed of sound (Mach 1). The term technically describes an aircraft that flies below its critical Mach number, typically around Mach 0.8. All current civil aircraft, including airliners, helicopters and airships, as well as many military types, are subsonic.
caption: Czech subsonic multi-role combat aircraft Aero L-159 Alca.
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