Free of charge in the operation is quite high. Because it has a higher freight rate rate for other types of freight transport depending on air conditions phaphumi make it a threat to transportation if the climate. Not permitting
Cost of operation is high. Because of higher freight rates, freight rates of other types. Other transport depends on the security climate makes it a barrier to transportation if the climate. Unfavorable
Cost performance is quite high. Because the freight rates higher than other types of freight rate transport depending on the state ภภู cannot make an obstacle to air transport, if the climate. Not favorable.