(Luypaert and Van Caneghem 2014). Theoretically, an audit can be viewed as an economic goods or a professional service process (Knechel et al. 2020). Introduction Economic goods viewpoint Professional

Certificate of Training Organization Approval from the Civil Aviation Authority of Thailand (CAAT). The newly certified courses are;  Private Pilot Airplane Course  Refresher and Re-qualification Training

IEA asserted that the number of airplane flights that have declined will limit demand for fuel to not return to the pre-pandemic level until 2022; becoming a factor putting pressure on the price of