First helicopter cargo operations, the S 55 A H19 produced by the U.S. firm Sikorsky, made its first operational flight November 12, 1949.
ການດໍາເນີນງານສິນຄ້າ helicopter ທໍາອິດ, S 55 A H19 ຜະລິດໂດຍບໍລິສັດສະຫະລັດເຮລິຄອບເຕີ, ເຮັດໃຫ້ຂອງຕົນບິນປະຕິບັດງານຄັ້ງທໍາອິດພະຈິກ 12, 1949.