The development of the aviation industry after the COVID-19 pandemic is prompting aviation institutions to improve their courses, including English courses. A teacher who teaches English for aviation has an important role to play in adapting the teaching style to the needs of the students. This paper explored the experiences of teachers in teaching aviation English to students in the aircraft maintenance program. The participants were three English teachers from three different aviation schools in Malaysia. Semi-structured interviews were conducted as part of a fully qualitative study, and the data were analyzed thematically using ATLAS.Ti software. The findings revealed that they faced both successes and challenges in teaching aviation English, which were categorized into three areas: opportunities, feelings, and progress. The subthemes for successes were seizing opportunities, positive feelings, and good progress, while missing opportunities, negative feelings, and slow progress were the subthemes for challenges. Seizing opportunities referred to participants mastering their teaching tasks, while positive feelings referred to satisfaction with teaching, feedback from students, and enjoyment of the learning process. The sub-theme of good progress referred to the participants' better progress. The sub-themes for challenges, on the other hand, were missing opportunities, negative feelings, and slow progress. It referred to the lack of institutional support, limited knowledge about aviation and sources, while the negative feelings referred to frustration with students, technical instructors and a lack of confidence in the knowledge they had. On the other hand, participants felt that their progress was slow when they had to deal with different levels of students, which was time-consuming and related to the nature of learning and teaching aviation English. The findings would help curriculum developers and English teachers to provide an English course that meets the needs of aviation students. [For the full proceedings, see ED654100.]