A-boiler A-boiler 原子反应器加热用的锅炉

AA Anti-Aircraft 防空

AAB Aircraft Accident Board 飞机失事管理局

AAC Aeronautical Approach Chart 航空进机场图

AAE Aeronautical and Astronautical Engineering Department 航空与航天工程系

AAF Army Air Forces 陆军航空队

AAI Angle of Approach Indicator 进近角指示器

AAIB Air Accidents Investigation Branch 航空事故调查部门

AAIM Aircraft Autonomous Integrity Monitor 飞机自治完好性监控

AAL Aircraft Approach Limitation 飞机着陆限制

AAP Apollo Applications Program 阿波罗应用计划[美]

AAR Air-to-Air Refuelling 空中加油

AARS Automatic Aircraft Reporting System 机载观测资料自动发送系统

AASR Airport and Airways Surveillance Radar 机场和航路监视雷达

AAT Aviation Advisory Team 航空顾问组

ABC Airborne Control 空中控制

ABLV Air-Breathing Launch Vehicle 喷气运载火箭

ABPS airborne beacon processing system 机载信标信息处理系统

ABQ ALBUQUERQUE 阿尔伯克基

ABRS Advance Ballistic Reentry System 高级弹道式再入系统