Subpart A - Applicability

Question 1

4 types of Airport classification

Answer 1

Class I - Scheduled/Unscheduled large aircraft, scheduled small air carrier
Class II - Scheduled small, unscheduled large Air carrier
Class III - scheduled small air carrier aircraft
Class IV - unscheduled large air carrier aircraft

Question 2

PART 139.3

Answer 2

FAA or the admin of the FAA has authority to enforce the requirements of the Regulation.