The five now working as "advisers" to the acting president are: Chokchai Panyayong, who was in charge of corporate strategy and sustainable development since stepping down as acting president a month ago; Teerapol Chotichanapibal, of the commercial department; Pandit Chanapai, of the aviation business unit; Niruj Maneepun, of human resources and compliance; and Danuj Bunnag, of corporate ancillary revenue.
The decision was made in a board meeting on Thursday and took immediate effect.
The source said THAI's acting president ACM Siwakiat Chayema signed an order on Friday to appoint their replacements, specifying four from the air force and one from the army.
Flt Lt Montree Jumrieng, an executive vice-president overseeing the technical department, was transferred to replace Mr Chokchai. Flg Off Suraphon Israngura Na Ayuthya, managing director for the catering department, replaces Mr Teerapol. Flt Lt Kanok Thongpurk, vice-president for human resources and management, replaces Mr Niruj. Sub Lt Anussorn Naksrichum, managing director for ground equipment services, replaces Mr Pandit. Mr Danuj's replacement is yet to be named, but will be from the air force.
According to the source, the order assigned Mr Chokchai, who will retire in September, Mr Pandit and Mr Teerapol to map out an urgent plan to explore ways to boost revenue and to consider rehabilitation efforts.
Their work will cover sales and marketing, mail shipments, passenger transportation and other sources of revenue.
They were told to provide regular updates of their work to the acting president, the source said. Mr Danuj was assigned to provide advice related to good governance and service, while Mr Niruj was given the task of legal counselling.
The source said the replacements have yet to take up their posts.