(1) For more than 2 boardings on a one-way trip or in each direction of a round trip;

(2) On any flight to an eligible point on an air carrier that receives essential air service compensation on that route. The Administrator makes available a list of carriers and eligible routes determined by the Department of Transportation for which PFC's may not be imposed under this section;

(3) Who is a nonrevenue passenger or obtained the ticket for air transportation with a frequent flier award coupon;

(4) On flights, including flight segments, between 2 or more points in Hawaii;

(5) In Alaska aboard an aircraft having a certificated seating capacity of fewer than 60 passengers; or

(6) Enplaning at an airport if the passenger did not pay for the air transportation that resulted in the enplanement due to Department of Defense charter arrangements and payments.