this research study aimed to create ESP materials on English for Airline Ground Attendant Service for third year English major undergraduates at the faculty of Liberal Arts, Rajamangala University of Technology Thanyaburi who enrolled in the English for Airline Representative Course in the first semester of the 2011 academic year. There were thirty participants selected via purposive sampling. The materials consist of five units based on the Content-Based Approach.. The efficiency of the ESP materials was measured in accordance with the criteria 80/80. Furthermore, the students' satisfaction toward the designed materials was explored.