4 0 0 . ▁ ▁On ▁ 1 8 ▁December ▁ 2 0 1 2 , ▁M AS w ings ' ▁parent ▁company , ▁Malays ia ▁Airlines , ▁ordered ▁ 3 6 ▁A TR ▁ 7 2 - 6 0 0 ▁for ▁its ▁subs idi aries . ▁ 1 6 ▁of ▁the ▁ordered ▁aircraft ▁will ▁be ▁delivered ▁to ▁M AS w ings , ▁while ▁the ▁remaining ▁ 2 0 ▁will ▁enter ▁service ▁with ▁Fire fly . ▁For ▁the ▁replacement ▁of ▁the ▁T win ▁Ot ter ▁Series ▁ 3 0 0 , ▁six ▁brand - new ▁T win ▁Ot ter ▁Series ▁ 4 0 0 ▁aircraft ▁will ▁enter ▁service ▁in ▁mid - 2 0 1 3 . ▁ ▁On ▁ 2 5 ▁July ▁ 2 0 1 3 , ▁M AS w ings ▁received ▁its ▁first ▁A TR ▁ 7 2 - 6 0 0 . ▁However , ▁due ▁to ▁cost ▁reasons , ▁all ▁A TR ▁ 7 2 - 6 0 0 s ▁later ▁retired ▁from ▁active ▁duties ▁and ▁stored . ▁ ▁Dest in ations ▁ ▁M AS w ings ▁serve ▁the ▁following ▁at ▁August ▁ 2 0 1 7 : ▁▁ ▁Malays ia ▁▁ ▁Sab ah ▁State ▁ ▁K ota ▁Kin ab alu ▁- ▁K ota ▁Kin ab alu ▁International ▁Airport ▁Main ▁Hub ▁ ▁K ud at ▁- ▁K ud at ▁Airport ▁ ▁L ah ad ▁D atu ▁- ▁L ah ad ▁D atu ▁Airport ▁ ▁Sand ak an ▁- ▁Sand ak an ▁Airport ▁ ▁T aw au ▁- ▁T aw au