航空附件 meaning in English

aa automated approach
aa aviation annex

Airport refueling equipment the aircraft fuel system and component research department in criaa has more than 50 seniormiddle technicians and over 20 technical workers
中国航空附件研究所飞机燃油系统及附件技术研究室有高、中级专业技术人员５０多人，技术工人２０多人。
The department of wheel and brake control system criaa s department of wheel and brake control system is a key unit at the risearch and developing of wheels and braking control systems in china , and has more than 70 engineers and technicians involving inf design and research work
中国航空附件研究所的飞机几轮与刹车控制系统附件研究室是中国国内从事机轮与刹车系统研究与开发的重点单位，致力于设计与研究工作的工程师与技术人员有70余人。