Transport i lotnictwo · 5.12.1996

Advisory Circular 25-20, Pressurization, Ventilation and Oxygen Systems Assessment for Subsonic Flight Including High Altitude Operation

This notice announces the issuance of Advisory Circular (AC) 25-20, Pressurization, Ventilation and Oxygen Systems Assessment for Subsonic Flight Including High Altitude Operation. This AC sets forth guidance on methods of compliance with the requirements of part 25 of the Federal Aviation Regulations (FAR) pertaining to pressurization, ventilation, and oxygen systems, especially as they pertain to high altitude subsonic flight. As with all AC material, it is not mandatory and does not constitute a regulation. The applicant may elect to follow alternate methods provided that these methods are also found by the FAA to be an acceptable means of complying with the requirements of part 25.