Boeing’s troubled 737 MAX aircraft won another boost Tuesday, as Air Astana said it planned to buy 30 of the planes a day after SunExpress of Turkey ordered 10 of the jets, which were grounded in March. {"preview_thumbnail":"https://cdn.flowplayer.com/6684a05f-6468-4ecd-87d5-a748773282a3/i/v-i-2…","video_id":"2f074372-b3fa-4f9f-8191-57992d2241ce","player_id":"8ca46225-42a2-4245-9c20-7850ae937431","provider":"flowplayer","video":"10 Highest Average Cappuccino Prices Around the World"} The Kazakh flag carrier said it had signed a “letter of intent” to buy the 737 MAX 8 for its new low-cost carrier FlyArystan, with ...