noun
civilian aircraft
Refers to any aircraft not operated by the military, including commercial airliners, private planes, and general aviation.
この空港には民間機だけが発着できる。
Only civilian aircraft can take off and land at this airport.
軍用機と民間機では安全基準が異なる。
Safety standards differ between military and civilian aircraft.
旅客機 specifically means 'passenger aircraft', a common type of civilian aircraft.
Compound of 民間 (civilian, private sector) and 機 (aircraft, machine).