aeronautical engineer
/， e.r.n.:t.k (.)l ，end3.'n.. / an engineer who specialises in the design of aircraft

aeronautical engineering
/，e.r.υn.:t.k (.)l ，end3.'n..r.. / noun
the science or study of the design of air-craft

aeronautical fixed service
/， e.r.n.:t.k (.)l，f.kst 's3:v.s / noun a radio communications service between fixed points that is designed to enable aircraft to travel safely. Abbreviation
AFS
aeronautical fixed telecommu-nication network /，e.r.n.:t.k (.)l，f.kst，telik.mju:n.'ke.. (.)n ，netw3:k /
noun a ground-based network of tele-printers that transmits flight plans and similar data between control centres. Abbreviation AFTN
aeronautical information circu-lar /， e.r.n.:t.k (.)l ，.nf.'me.. (.)n，s3:kjυl. / noun a notice issued by an aviation authority in which information is given about administrative, technical, safety or operational matters
Aeronautical Information Publi-cation noun a document issued by a state in which information is given about aviation in that country. Abbrevi-ation AIP
aeronautics /，e.r.'n.:t.ks / noun 1.
the science of aircraft design, construc-tion and operation 2. the theory and practice of aircraft navigation

aeroneurosis 10
aeroneurosis /e.r.υnjυr.υs.s/
noun anxiety and fatigue in airline pilots as a result of long periods of fly-ing
aeroplane /e.r.ple.n/ noun a
power-driven, heavier-than-air craft with fixed wings (NOTE: Many people use the words aeroplane and aircraft as if they had exactly the same mean-ing. However, aeroplanes, hot-air bal-loons, helicopters, airships and gliders are all aircraft. The US English is air-plane.)

aeroplane performance
/e.r.ple.n p.f.m.ns/ noun a
description in figures of what a plane can do, including, e.g., its speed, rate of climb, and the length of its take-off run
aerostat /e.r.υstt/ noun a hot-air or gas-filled aircraft, e.g. an airship or balloon
aero-tow /e.r.t.υ/ noun a tech-nique of using a powered aircraft to pull a glider into the air . An aero-tow to 2,000 feet costs $25.
AFCS abbreviation automatic flight control system
AFDS abbreviation autopilot flight director system
affect /.fekt/ verb to have an influ-ence on something, or cause a change in something . Humidity and air density are factors which affect the output of the engine. Compare effect
AFI abbreviation assistant flying instructor
AFIC abbreviation assistant flying instructor course
AFIS abbreviation aerodrome flight information service