https://liveandletsfly.boardingarea.com ... etirement/According to the current schedule, Thai plans to phase out one B747 in 2019, one in 2020, and two each in 2021 and 2022. It had already retired two units of the type earlier this year.
The Thai flag carrier might also extend the lifeline of some of its older B777s or, alternatively, keep the current phaseout schedule for these units but lease second-hand aircraft for a short term.
http://atwonline.com/airframes/thai-air ... ity-issues