PART 135--OPERATING REQUIREMENTS: COMMUTER AND ON DEMAND OPERATIONS
AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT--Table of Contents
Subpart B--Flight Operations
Sec. 135.107 Flight attendant crewmember requirement.
No certificate holder may operate an aircraft that has a passenger
seating configuration, excluding any pilot seat, of more than 19 unless
there is a flight attendant crewmember on board the aircraft.
Different operating certificate than airline. They are considered air taxi
operations
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