Avia 360 exam 4 Liberty University More information: https://www.homeworksimple.com/downloads/avia-360-exam-4/ Who is responsible for the airworthiness of all aircraft within the flight department? Unescorted visitors in the hangar, or on the ramp should be What person is responsible for ensuring that a viable maintenance program is in place? The NBAA Management Guideline which attempted to establish best practices, was first published in the