在阅读一些国际通告、报文时，经常会遇到一些较为陌生的缩略语，而且随着民航的发展，一些例如基于性能的导航实施、向航空情报管理过渡、气象警报、基于性能的通信与监视和卫星话音通信实施等有关的航行通告中常用的一些新缩略语也不断出现，所以收藏一些陌生的缩略语，以备随时查询，下面只列举一些不容易立刻想到的，更详细的请查阅ICAO8400文件，而且还需要注意的是如果你在ICAO文件中没有找到，也可以去当局的AIP中翻看一下：
AAD Assigned altitude deviation 指定高度偏差AAL Above aerodrome level 高出机场场面ABN Aerodrome beacon 机场灯标ACL Altimeter check location 高度表校准位置ACPT Accept or accepted 接受或已收到ACT Active or activated or activity 使用中的或被激活的或活动ADDN Addition or additional 增加或附加AGA Aerodromes, air routes and ground Aids 机场、航路和地面设备AGL Above ground level 高出地面，离地高度AMSL Above mean sea level 高出平均海平面ALA Alighting area 着陆（水）区，降落区APRX Approximate or approximately 近似，大约ASAP As soon as possible 尽快AUTH Authorized or authorization 经授权的或授权，经批准的或批准CDN Coordination (message type designator) 协调（电报种类代号）CDR Conditional route 条件性航路CMPL Completion or completed or complete 完成，完成的CONT Continue(s) or continued 继续，连续的COP Change-over point 转换点DER Departure end of the runway 跑道离场端DEV Deviation or deviating 偏航，偏离，偏差DIV Divert or diverting 转换，转向，改航，备降DNG Danger or dangerous 危险，危险的DP Dew point temperature 露点温度DTHR Displaced runway threshold 内移的跑道入口DTRT Deteriorate or deteriorating 变坏EAT Expected approach time 预计进近时间EFC Expect further clearance 等待进一步许可ETO Estimated time over significant point 预计飞越重要点的时间EXER Exercises or exercising or to exercise 演习EXP Expect or expected or expecting 期望，预计EXTD Extend or extending or extended 延伸，延长FBL Light (used to indicate the intensity of weather phenomena, interference or static reports, e.g. FBL RA = light rain)轻度（用以表示天气现象，干扰或静电报告的强度，例如：FBL RA为小雨）FCT Friction coefficient 摩擦系数FLTCK Flight check 飞行校验（检查）FLUC Fluctuating or fluctuation or fluctuated 摆动，波动FLW Follow(s) or following 如下，以下FPR Flight plan route 飞行计划航线FSL Full stop landing 全停着陆GNDCK Ground check 地面检查、地面校验GPA Glide path angle 下滑道角GS Small hail and/or snow pellets 小雹和/或雪粒H24 Continuous day and night service 昼夜服务HO Service available to meet operational requirements 按飞行需要开放HGT Height or height above 高或高于HN Sunset to sunrise 日没至日出HS Service available during hours of scheduled operations按班期时间开放HX No specific working hours 无规定开放时间IAO In and out of clouds 断续云中IBN Identification beacon 识别灯标IMPR Improve or improving 变好，改进IMT Immediate or immediately 即刻，立即INA Initial approach 起始进近INTRP Interrupt or interruption or interrupted 中断INTSF Intensify or intensifying 加强LIL Light intensity low 低强度灯LIM Light intensity medium 中强度灯LOC Localizer 航向信标（台），航向台定位器MAHF Missed approach holding fix 复飞等待定位点MNT Monitor or monitoring or monitored 监听，监控MOV Move or moving or movement 移动，活动NAVAID Navigation aid 导航设备NEG No or negative or permission not granted or that is not correct不，否定，未获批准或不正确
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