The majority of institutions do not have a hard and fast rule regarding the age of applicants to Aeronautical Engineering programs. There may be certain age preferences in some universities or nations, particularly for undergraduate studies. Candidates usually must have high school qualifications with a sound background in subjects such as Mathematics, Physics, and English.
For postgraduate studies, there is greater flexibility in terms of age, since field experience or relevant undergraduate qualifications might take precedence. That being said, a few institutions might prioritize younger applicants for some undergraduate engineering programs, while mature students can seek admission for master's or Ph.D. studies, as long as they adhere to the academic and professional requirements set. It is always best to verify the respective eligibility requirements for each institution since some impose age-specific preferences or limitations for some scholarships or admission types.