▁With ▁an ▁oper ational ▁fleet ▁of ▁ 2 4 ▁cargo ▁aircraft , ▁the ▁air line ' s ▁cargo ▁division ▁serves ▁ 8 2 ▁destin ations . ▁ ▁The ▁air line ' s ▁corpor ate ▁headquarters ▁are ▁at ▁the ▁Turkish ▁Airlines ▁General ▁Management ▁Building ▁on ▁the ▁grounds ▁of ▁Ist an bul ▁At at ür k ▁Airport ▁in ▁Ye ş il kö y , ▁Bak ı r kö y , ▁Ist an bul . ▁Ist an bul ▁Airport ▁in ▁Ar nav ut ko y ▁is ▁the ▁air line ' s ▁main ▁base , ▁and ▁there ▁are ▁secondary ▁hub s ▁at ▁An k ara ▁Es en bo ğ a ▁Airport ▁and ▁ İ z mir ▁Ad nan ▁M ender es ▁Airport . ▁Turkish ▁Airlines ▁has ▁been ▁a ▁member ▁of ▁the ▁Star ▁Alliance ▁network ▁since ▁ 1 ▁April ▁ 2 0 0 8 . ▁ ▁History ▁ ▁Early ▁years ▁Turkish ▁Airlines ▁was ▁established ▁on ▁ 2 0 ▁May ▁ 1 9 3 3 ▁as ▁Turkish ▁State ▁Airlines ▁( T urk ish : ▁Dev let ▁H ava ▁Y ollar ı ) ▁as ▁a ▁department ▁of ▁the ▁Ministry ▁of ▁National ▁Def ence . ▁The ▁air line ' s ▁initial ▁fleet ▁consisted ▁of ▁two ▁five - se at ▁Curt iss ▁King bird s , ▁two ▁four - se at ▁J unk ers ▁F ▁ 1 3 s ▁and ▁one ▁ten - se at ▁T up ole v ▁AN T - 9 . ▁In ▁ 1 9 3 5 , ▁the ▁air line ▁was ▁turned ▁over ▁to ▁the ▁Ministry ▁of ▁Public