A - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

A	琥珀色 Amber
AAA	(或AAB、AAC…等；按順序) 氣象修正報 (電報型式代字) (or AAB, AAC...etc., in sequence) Amended meteorological message (message type designator)
A/A	空對空 Air-to-air
AAD	指定高度偏離 Assigned altitude deviation
AAIM	航空器自主完整性監視 Aircraft autonomous integrity monitoring
AAL	機場平面以上 Above aerodrome level
AAR	空中加油 Air to air refuelling
ABI	下一個邊界的情報 Advance boundary information
ABM	側過 Abeam
ABN	機場標燈 Aerodrome beacon
ABT	約 About
ABV	在...之上 Above
AC	高積雲 Altocumulus
ACARS	機載通訊定址與回報系統 Aircraft communication addressing and reporting system
ACAS	空中防撞系統 Airborne collision avoidance system
ACC	區域管制中心或區域管制 Area control center or area control
ACCID	航空器失事之通知 Notification of an aircraft accident
ACFT	航空器 Aircraft
ACK	領知 Acknowledge
ACL	高度表校對位置 Altimeter check location
ACN	航空器等級序號 Aircraft classification number
ACP	領受(電報型式代字) Acceptance (Message type designator)
ACPT	接受 Accept or accepted
ACT	使用中或活動中或活動 Active or activated or activity
AD	機場 Aerodrome
ADA	諮詢區域 Advisory area
ADC	機場圖 Aerodrome chart
ADDN	附加或附加的 Addition or additional
ADF	自動定向儀 Automatic direction-finding equipment
ADIZ	防空識別區 Air defense identification zone
ADJ	鄰近的﹐毗連的 Adjacent
ADO	機場單位 (指名服務項目) Aerodrome office (specify service)
ADR	諮詢航線 Advisory route
ADS	地址 Address
ADS-B	廣播式自動回報監視 Automatic dependent surveillance-broadcast
ADS-C	約定式自動回報監視 Automatic dependent surveillance-contract
ADSU	自動回報監視單位 Automatic dependent surveillance unit 自動回報監視單位
ADVS	諮詢服務 Advisory service
ADZ	告知 Advise
AES	航空器地面電臺 Aircraft earth station
AFIL	空中填報之飛航計畫 Flight plan filed in the air
AFIS	機場飛航情報服務 Aerodrome flight information service
AFM	是、肯定、正確 Yes or affirm or affirmative or that is correct
AFS	航空固定通信服務 Aeronautical fixed service
AFT...	(時間或地點) 以後 After (followed by time or place)
AFTN	航空固定通信網 Aeronautical fixed telecommunication network
A/G	空對地 Air-to-ground
AGA	機場、航線及地面設備 Aerodromes , air routes and ground aids
AGL	地平面上 Above ground level
AGN	再 Again
AIC	航空公報 Aeronautical information circular
AIDC	飛航服務單位間資料通信 Air traffic services interfacility data communications
AIM	航空情報管理 Aeronautical information management
AIP	飛航指南 Aeronautical information publication
AIRAC	航空情報定期發布制度(航空情報規定及管理) Aeronautical information regulation and control
AIREP	空中報告 Air-report
AIRMET	可能影響低空層航機操作安全之航路天氣現象相關資訊 Information concerning en-route weather phenomena which may affect the safety of low-level aircraft operations
AIS	航空情報服務 Aeronautical information services
ALA	起降區(水上機場) Alighting area
ALERFA	警戒階段 Alert phase
ALR	守助(電報型式代字) Alerting (message type designator)
ALRS	守助服務 Alerting service
ALS	進場燈光系統 Approach lighting system
ALSF-1*	含順序閃光燈之第1類進場燈光系統 Category I approach lighting system, sequenced flashers
ALT	高度 Altitude
ALTN	變換(燈光顏色變換） Alternate or alternating (light alternates in color)
ALTN	備用（機場） Alternate (aerodrome)
AMA	區域最低高度 Area minimum altitude
AMD	Amend or amended (used to indicate amended meteorological message; message type designator) 修正（用於氣象修正報；電報型式代字）
AMDT	修正（飛航指南修正） Amendment ( AIP Amendment )
AMS	航空行動服務 Aeronautical mobile service
AMSL	高出平均海平面 Above mean sea level
AMSS	航空行動衛星服務 Aeronautical mobile satellite service
ANC...	1:500,000航圖 Aeronautical chart - 1:500000 (followed by name/title)
ANCS...	小比例尺航圖 Aeronautical navigation chart - small scale (followed by name/title and scale)
ANS	回答 Answer
AO	航空器使用人 Aircraft operator
AOC...	機場障礙圖 Aerodrome obstacle chart (followed by type and name/title)
AP	航空站 Airport
APAPI	簡式精確進場滑降指示燈 Abbreviated precision approach path indicator
APCH	近場或進場 Approach
APDC...	航空器停放/停靠圖 Aircraft parking/docking chart (followed by name/title)
APN	機坪 Apron
APP	近場管制單位或近場管制 Approach control office or approach control or approach control service
APR	四月 April
APRX	大約 Approximate or approximately
APSG	通過...以後 After passing
APU	輔助動力單元 Auxiliary power unit
APV	具垂直導引之進場程序 Approach procedure with vertical guidance
ARC	區域航圖 Area chart
ARNG	安排 Arrange
ARO	飛航服務報告室 Air traffic services reporting office
ARP	機場參考點 Aerodrome reference point
ARP	空中天氣報告(電報型式代字) Air-report (message type designator)
ARQ	自動誤差修正 Automatic error correction
ARR	到場 Arrive or arrival
ARR	到場(電報形式代字) Arrival (message type designator)
ARS	空中特別天氣報告(電報型式代字) Special air-report (message type designator)
ARST	跑道攔截(裝備) Arresting (specify (part of) aircraft arresting equipment)
AS	高層雲 Altostratus
ASAP	儘快 As soon as possible
ASC	爬升至 Ascend to or ascending to
ASDA	可用之加速-停止距離 Accelerate-stop distance available
ASDE*	機場場面偵測設備 Airport surface detection equipment
ASE	測高系統誤差 Altimetry system error
ASHTAM	指對航機操作有重要影響之火山爆發及/或火山灰雲之火山活動變化，以特定格式通知之特別系列飛航公告 Special series NOTAM notifying by means of a specific format change in activity of a volcano, a volcanic eruption and/or volcanic ash cloud that is of significance to aircraft operations.
ASMGCS*	先進機場場面引導及管制系統 Advanced surface movement guidance and control system
ASPH	瀝青 Asphalt
AT...	在（接預報天氣發生時間） At (followed by time at which weather change is forecast to occur)
ATA	實際到場時間 Actual time of arrival
ATC	飛航管制（通稱） Air traffic control (in general)
ATCSMAC...	航管監視最低高度圖 Air traffic control surveillance minimum altitude chart (followed by name/title)
ATD	實際離場時間 Actual time of departure
ATFM	飛航流量管理 Air traffic flow management
ATIS	終端資料自動廣播服務 Automatic terminal information service
ATM	飛航管理 Air traffic management
ATN	航空通信網路 Aeronautical telecommunication network
ATP...	在 (時間或地點) At (followed by time or place)
ATS	飛航服務 Air traffic services
ATTN	注意 Attention
AT-VASIS	簡式T型目視進場滑降指示燈 Abbreviated T visual approach slope indicator system
ATZ	機場交通地帶 Aerodrome traffic zone
AUG	八月 August
AUTH	授權 Authorized or authorization
AUTO	自動的 Automatic
AUW	總重量 All up weight
AUX	輔助的 Auxiliary
AVBL	可用的或可用率 Available or availability
AVG	平均數 Average
AVGAS	航空汽油 Aviation gasoline
AWOS	自動氣象觀測系統 Automated weather observation system
AWTA	告知可行時間 Advise at what time able
AWY	航路 Airway
AZM	方位 Azimuth

B - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

B	藍色 Blue
BA	制動作用 Braking action
BARO-VNAV	氣壓垂直導航 Barometric vertical navigation
BASE	雲底 Cloud base
BCFG	碎霧 Fog patches
BCN	標燈（航空地面燈光） Beacon (aeronautical ground light)
BCST	廣播 Broadcast
BDRY	邊界 Boundary
BECMG	轉變為... Becoming
BFR	在...之前 Before
BKN	裂雲 Broken
BL...	吹（後接塵﹐沙﹐或雪） Blowing (followed by DU=dust, SA=sand or SN=snow)
BLDG	建築物 Building
BLO	雲下 Below clouds
BLW	低於 Below
BOMB	轟炸 Bombing
BR	靄 Mist
BRF	短（用於進場種類需要或請求） Short (used to indicate the type of approach desired or required)
BRG	方位 Bearing
BRKG	煞車 Braking
BS	商用廣播電臺 Commercial broadcasting station
BTL	雲層間 Between layers
BTN	之間 Between
BUFR	以全球二位元碼格式展現的氣象電碼 Binary universal form for the representation of meteorological data

C - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

...C	中心（置於跑道名稱後以識別平行跑道） Centre (preceded by runway designation number to identify a parallel runway)
C	攝氏度數 Degrees Celsius (Centigrade)
CA	航道至指定高度（用於導航資料庫編碼） Course to an altitude
CAA	民用航空局 Civil aviation authority or civil aviation administration
CAT	類 Category
CAT	晴空亂流 Clear air turbulence
CAVOK	能見度、雲及現在天氣較指定之情況為佳 Visibility, cloud and present weather better than prescribed values or conditions
CB	積雨雲 Cumulonimbus
CC	卷積雲 Cirrocumulus
CCA	(或CCB、CCC…等；按順序)氣象更正報(電報型式代字) (or CCB, CCC...etc., in sequence) Corrected meteorological message (message type designator)
CCO	持續爬升操作 Continuous climb operations
CCW*	反時針方向 Counterclockwise
CD	燭光（光度基本單位） Candela
CDN	協調(電報型式代字) Coordination (message type designator)
CDO	持續下降操作 Continuous descent operations
CDR	條件航路 Conditional route
CEIL*	雲幕高 Ceiling
CF	改變頻率為... Change frequency to ...
CF	航道至航點（用於導航資料庫編碼） Course to a fix
CFM	確認（用於航空固定通信服務作為程序信號） Confirm or I confirm (to be used in AFS as a procedure signal)
CGL	繞場燈 Circling guidance light(s)
CH	頻道（波道） Channel
CH	發報的頻道連續性檢查，作為頻道收報系列號碼記錄的比較（用於航空固定通信服務作為程序信號） This is a channel-continuity-check of transmission to permit comparison of your record of channel-sequence numbers of messages received on the channel ( to be used in AFS as a procedure signal )
CHEM	化學的 Chemical
CHG	變更(電報型式代字) Modification (message type designator)
CI	卷雲 Cirrus
CIDIN	國際民航組織通用資訊交換網 Common ICAO data interchange network
CIV	民方 Civil
CK	檢查 Check
CL	中心線 Center line
CLA	明冰 Clear type of ice formation
CLBR	校驗 Calibration
CLD	雲 Cloud
CLG	呼叫 Calling
CLIMB-OUT	開始爬升區 Climb-out area
CLR	准許、許可 Clear(s) or cleared to ...or clearance
CLRD	跑道清除（使用於METAR/SPECI報） Runway(s) cleared (used in METAR/SPECI)
CLSD	結束、關閉 Close or closed or closing
CM	厘米 Centimeter
CMB	爬升至 Climb to or climbing to
CMPL	完成 Completion or completed or complete
CNL	取消 Cancel or cancelled
CNL	取消飛航計畫（電報型式代字） Flight plan cancellation (message type designator)
CNS	通信、導航及監視 Communications, navigation and surveillance
COM	通信 Communications
CONC	混凝土 Concrete
COND	情況 Condition
CONS	連續的 Continuous
CONST	施工 Construction or constructed
CONT	繼續 Continue(s) or continued
COOR	協調 Coordinate or coordination
COORD	座標 Coordinates
COP	變換點 Change-over point
COR	更正（用於氣象更正報;電報型式代字） Correct or correction or corrected (used to indicate corrected meteorological message; message type designator)
COT	在海邊 At the coast
COV	覆蓋 Cover or covered or covering
CPDLC	管制員-駕駛員資料鏈路通信 Controller-pilot data link communications
CPL	現用飛航計畫(電報型式代字) Current flight plan (message type designator)
CRC	週期性重複檢查 Cyclic redundancy check
CRM	碰撞風險模式 Collision risk model
CRP	強制報告點 Compulsory reporting point
CRZ	巡航 Cruise
CS	呼號 Call sign
CS	卷層雲 Cirrostratus
CTA	管制區域 Control area
CTAM	爬升至並保持 Climb to and maintain
CTC	接觸，聯繫 Contact
CTL	管制 Control
CTN	注意 Caution
CTR	管制地帶 Control zone
CU	積雲 Cumulus
CUF	積雲狀 Cumuliform
CUST	海關 Customs
CVR	駕駛艙通話記錄器 Cockpit voice recorder
CW	連續波 Continuous wave
CW*	順時針方向 Clockwise
CWY	清除區 Clearway

D - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

D	下降（RVR值在過去10分鐘的趨勢） Downward (tendency in RVR during previous 10 minutes)
D...	危險區 (後接識別名稱) Danger area (followed by identification)
DA	決定高度 Decision altitude
D-ATIS	資料鏈路終端資料自動廣播服務 Data link automatic terminal information service
DCD	雙波道雙工 Double channel duplex
DCKG	停靠 Docking
DCP	基準面交叉點 Datum crossing point
DCPC	管制員-駕駛員直接通信 Direct controller-pilot communications
DCS	雙波道單工 Double channel simplex
DCT	直飛 Direct (in relation to flight plan clearances and type of approach)
DE	從（用於呼叫站的呼號前）（用於航空固定通信服務作為程序信號） From (used to precede the call sign of the calling station) (to be used in AFS as a procedure signal)
DEC	十二月 December
DEG	度 Degrees
DEP	離場 Depart or departure
DEP	離場（電報型式代字） Departure (message type designator)
DEPO	沈積物 Deposition
DER	離場跑道末端 Departure end of the runway
DES	下降至 Descend to or descending to
DEST	目的地 Destination
DETRESFA	遇險階段 Distress phase
DEV	偏離 Deviation or deviating
DF*	定向至航點（用於導航資料庫編碼） Direct to a fix
DF	定向 Direction finding
DFDR	數位飛行資料記錄器 Digital flight data recorder
DFTI	著陸距離指示器 Distance from touchdown indicator
DH	決定實際高度 Decision height
DIF	擴散 Diffuse
DIST	距離 Distance
DIV	轉降 Divert or diverting
DLA	延遲（電報型式代字）  Delay (message type designator)
DLA	延遲 Delay or delayed
DLIC	資料鏈路初始能力 Data link initiation capability
DLY	每天 Daily
DME	測距儀 Distance measuring equipment
DNG	危險或危險的 Danger or dangerous
DOF	飛航日期 Date of flight
DOM	國內的 Domestic
DP	露點溫度 Dew point temperature
DPT	深度 Depth
DR	推測航行 Dead reckoning
DR...	低吹（後接塵,沙,雪） Low drifting (followed by DU=dust, SA=sand or SN=snow)
DRG	當 During
DS	塵暴 Dust storm
DSB	雙旁波帶 Double sideband
DTAM	下降至並保持 Descend to and maintain
DTG	日期時間組 Date-time group
DTHR	位移跑道頭 Displaced runway threshold
DTRT	劣化、降低 Deteriorate or deteriorating
DTW	前後雙輪 Dual tandem wheels
DU	塵 Dust
DUC	濃密上層雲 Dense upper cloud
DUPE	這是重複電報（用於航空固定通信服務作為程序信號） This is a duplicate message (to be used in AFS as a procedure signal)
DUR	期間 Duration
D-VOLMET	資料鏈路航空氣象資料 Data link VOLMET
DVOR	都卜勒特高頻多向導航臺 Doppler VOR
DW	雙輪 Dual wheels
DZ	毛毛雨 Drizzle

E - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

E	東方或東經 East or eastern longitude
EAT	預計進場時間 Expected approach time
EB	東向 Eastbound
EDA	高度差別區 Elevation differential area
EDTO	延展轉降時限作業 Extended diversion time operations
EEE	錯誤（用於航空固定通信服務作為程序信號） Error (to be used in AFS as a procedure signal)
EET	預計航程時間 Estimated elapsed time
EFC	預期進一步許可 Expect further clearance
EFIS	電子飛航儀表系統 Electronic flight instrument system
EGNOS	歐盟星基增強系統 European geostationary navigation overlay service
EHF	至高頻 (30000 to 300000 MHz) Extremely high frequency (30000 to 300000 MHz)
ELBA	航空器上緊急定位信標 Emergency location beacon-aircraft
ELEV	標高 Elevation
ELR	特長程 Extra long range
ELT	緊急定位發報機 Emergency locator transmitter
EM	發射 Emission
EMBD	隱藏在雲中（指其他雲層中隱藏積雨雲） Embedded in a layer (to indicate cumulonimbus embedded in layers of other clouds)
EMERG	緊急 Emergency
END	停止端（用於跑道視程時） Stop-end (related to RVR)
ENE	東北東 East-north-east
ENG	引擎 Engine
ENR	航路 En-route
ENRC...	航路圖 En-route chart (followed by name/title)
EOBT	預計移開輪檔時間 Estimated off-block time
EQN	北半球赤道地區 Equatorial latitudes northern hemisphere
EQPT	裝備 Equipment
EQS	南半球赤道地區 Equatorial latitudes southern hemisphere
ESE	東南東 East-south-east
EST	預計（電報型式代字） Estimate or estimated or estimation (message type designator)
ETA	預計到場時間或預計到場 Estimated time of arrival or estimating arrival
ETD	預計離場時間或預計離場 Estimated time of departure or estimating departure
ETO	預計通過重要點時間 Estimated time over significant point
EUR RODEX	歐洲區域作業用氣象資料交換 European regional OPMET data exchange
EV	每 Every
EVS	增強目視系統 Enhanced vision system
EXC	除外 Except
EXER	演習 Exercises or exercising or to exercise
EXP	預期 Expect or expected or expecting
EXTD	伸展或擴大 Extend or extending or extended

F - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

F	固定的 Fixed
FA	自航點沿航道至指定高度（用於導航資料庫編碼） Course from a fix to an altitude
FAC	設施 Facilities
FAF	最後進場定位點 Final approach fix
FAL	國際空運便利 Facilitation of international air transport
FAP	最後進場點 Final approach point
FAS	最後進場階段 Final approach segment
FATO	最後進離場區 Final approach and take-off area
FAX	傳真發送 Facsimile transmission
FBL	輕度（用於積冰、大氣亂流、 靜電干擾等之程度） Light (used to indicate the intensity of weather phenomena, interference or static reports, e.g. FBL RA=light rain)
FC	漏斗雲（龍捲或水龍捲） Funnel cloud (tornado or water spout)
FCST	預報 Forecast
FCT	摩擦係數 Friction coefficient
FDPS	飛航資料處理系統 Flight data processing system
FEB	二月 February
FEW	少 Few
FG	霧 Fog
FIC	飛航情報中心 Flight information center
FIR	飛航情報區 Flight information region
FIS*	飛航諮詢臺 Flight information station
FIS	飛航情報服務 Flight information service
FISA	自動化飛航情報服務 Automated flight information service
FL	飛航空層 Flight level
FLD	區域,範圍 Field
FLG	閃光 Flashing
FLO*	照明燈 Flood light
FLR	火焰 Flares
FLT	飛航 Flight
FLTCK	飛航測試 Flight check
FLUC	波動 Fluctuating or fluctuation or fluctuated
FLW	跟隨；後接 Follow(s) or following
FLY	飛行 Fly or flying
FM	自航點沿航道至人工終止(引導) （用於導航資料庫編碼） Course from a fix to manual termination
FM	從 From
FM...	從（後接預報天氣變化開始時間） From (followed by time weather change is forecast to begin)
FMC	飛航處理電腦 Flight management computer
FMS	飛航管理系統 Flight management system
FMU	流量管理單位 Flow management unit
FNA	最後進場 Final approach
FOD*	外物損害 Foreign object damage
FPAP	航道對正點 Flight path alignment point
FPL	飛航計畫 Flight plan
FPM	呎/分 Feet per minute
FPR	飛航計畫航線 Flight plan route
FR	剩餘油量 Fuel remaining
FREQ	頻率或班期 Frequency
FRI	星期五 Friday
FRNG	火炮射擊 Firing
FRONT	鋒面（天氣） Front (relating to weather)
FROST	霜(用於機場警報) Frost (used in aerodrome warnings)
FRQ	經常 Frequent
FSL	全停落地 Full stop landing
FSS	飛航諮詢臺 Flight service station
FST	第一 First
FT	呎（度量衡單位） Feet (dimensional unit)
FTE	飛航技術誤差 Flight technical error
FTP	假想跑道頭 Fictitious threshold point
FTT	飛航技術容許偏差 Flight technical tolerance
FU	煙 Smoke
FZ	冰凍 Freezing
FZDZ	凍毛雨 Freezing drizzle
FZFG	凍霧 Freezing fog
FZRA	凍雨 Freezing rain

G - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

G	綠色 Green
G...	平均風速變化（陣風）（後接數字，用於METAR/SPECI及TAF報） Variations from the mean wind speed (gusts) (followed by figures in METAR/SPECI and TAF )
GA	普通航空 General aviation
GA	請講，請恢復發報（用於航空固定通信服務作為程序信號） Go ahead, resume sending (to be used in AFS as a procedure signal)
G/A	地對空 Ground-to-air
G/A/G	地對空及空對地 Ground-to-air and air-to-ground
GAGAN	印度星基增強系統 GPS and geostationary earth orbit augmented navigation
GAIN	增加空速或頂風 Airspeed or headwind gain
GAMET	低空飛行之區域天氣預報 Area forecast for low-level flights
GARP	GBAS方位參考點 GBAS azimuth reference point
GBAS	陸基增強系統 Ground - based augmentation system
GCA	地面管制進場設備或地面管制進場 Ground controlled approach system or ground controlled approach
GEN	通則 General
GEO	地理的或真向的 Geographic or true
GES	地面基地臺 Ground earth station
GLD	滑翔機 Glider
GLONASS	全球導航衛星系統 Global navigation satellite system
GLS	陸基增強系統之降落系統 GBAS landing system
GMC...	機場地面活動圖 Ground movement chart (followed by name/title)
GND	地面 Ground
GNDCK	地面查核 Ground check
GNSS	全球導航衛星系統 Global navigation satellite system
GOV	政府 Government
GP	下滑道或滑降臺 Glide path
GPA	滑降角 Glide path angle
GPIP	下滑道攔截點 Glide path intercept point
GPS	全球定位系統 Global positioning system
GPU	地面動力單元 Ground power unit
GPWS	接近地面警告系統 Ground proximity warning system
GR	雹 Hail
GRAS	陸基區域增強系統 Ground-based regional augmentation system
GRASS	草地降落區 Grass landing area
GRIB	柵點值形式之處理氣象資料（航空氣象電碼） Processed meteorological data in the form of grid point values expressed in binary form (meteorological code)
GRVL	碎石 Gravel
GS	地速 Ground speed
GS	小冰雹 Small hail and/or snow pellets
GUND	大地基準面起伏 Geoid undulation

H - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

H	高氣壓區或高氣壓中心 High pressure area or the centre of high pressure
H...	顯著浪高(後接數字，用於METAR/SPECI報) Significant wave height (followed by figures in METAR/SPECI)
H24	日夜24小時服務 Continuous day and night service
HA	等待航線/橢圓航線至指定高度（用於導航資料庫編碼） Holding/racetrack to an altitude
HAPI	直昇機進場滑降指示燈 Helicopter approach path indicator
HBN	危險標燈 Hazard beacon
HCH	通過直昇機機場實際高度 Heliport crossing height
HDF	高頻定向臺 High frequency direction-finding station
HDG	航向 Heading
HEL	直昇機 Helicopter
HF	等待航線/橢圓航線至航點（用於導航資料庫編碼） Holding/racetrack to a fix
HF	高頻（3000 to 30000 kHz） High frequency (3000 to 30000 kHz)
HGT	實際高度 Height or height above
HJ	日出至日沒 Sunrise to sunset
HLDG	等待 Holding
HLP	直昇機機場 Heliport
HLS	直昇機降落點 Helicopter landing site
HM	等待航線/橢圓航線至人工終止(引導)（用於導航資料庫編碼） Holding/racetrack to a manual termination
HN	日沒至日出 Sunset to sunrise
HNH	北半球高緯度地區 High latitudes northern hemisphere
HO	應航行需要服務 Service available to meet operational requirements
HOL	假日 Holiday
HOSP	醫療服務航空器 Hospital aircraft
HPA	百帕 Hectopascal
HR	小時 Hours
HRP	直昇機機場參考點 Heliport reference point
HS	應定期航行時間服務 Service available during hours of scheduled operations
HSH	南半球高緯度地區 High latitudes southern hemisphere
HUD	平視顯示儀 Head-up display
HUM	人道主義 Humanitarian
HURCN	颶風 Hurricane
HVDF	高頻及特高頻定向臺（同址） High and very high frequency direction-finding stations (at the same location)
HVY	重 Heavy
HVY	重度（用於指明天氣現象的強度） Heavy (used to indicate the intensity of weather phenomena, e.g. HVY RA = heavy rain)
HX	無特定工作時間 No specific working hours
HYR	較高 Higher
HZ	塵霾 Haze
HZ	赫（週數/每秒） Hertz (cycle per second)

I - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

IAC...	儀器進場圖 Instrument approach chart (followed by name/title)
IAF	最初進場定位點 Initial approach fix
IAO	進出雲層 In and out of clouds
IAP	儀器進場程序 Instrument approach procedure
IAR	航線交叉點 Intersection of air routes
IAS	指示空速 Indicated airspeed
IBN	識別標燈 Identification beacon
ICAO	國際民航組織 International Civil Aviation Organization
ICE	積冰 Icing
ID	識別或辨認 Identifier or identify
IDENT	識別 Identification
IF*	起始點（用於導航資料庫編碼） Initial fix
IF	中間進場定位點 Intermediate approach fix
IFF	敵我識別 Identification friend/foe
IFR	儀器飛航規則 Instrument flight rules
IGA	國際普通航空 International general aviation
ILS	儀器降落系統 Instrument landing system
IM	內信標臺 Inner marker
IMC	儀器天氣情況 Instrument meteorological conditions
IMG	移民 Immigration
IMI	詢問符號（用於航空固定通信服務作為程序信號） Interrogation sign (question mark) (to be used in AFS as a procedure signal)
IMPR	改進 Improve or improving
IMT	立即 Immediate or immediately
INA	最初進場 Initial approach
INBD	入境 Inbound
INC	雲中 In cloud
INCERFA	情況不明階段 Uncertainty phase
INCORP	編入 Incorporated
INFO	資料情報 Information
INOP	失效 Inoperative
INP	如不可能 If not possible
INPR	進行中 In progress
INS	慣性導航系統 Inertial navigation system
INSTL	安裝或設施 Install or installed or installation
INSTR	儀器 Instrument
INT	交叉處 Intersection
INTL	國際 International
INTRG	詢問器 Interrogator
INTRP	阻擾或間斷 Interrupt or interruption or interrupted
INTSF	加強 Intensify or intensifying
INTST	強度 Intensity
IR	跑道積冰 Ice on runway
IRS	慣性參考系統 Inertial reference system
ISA	國際標準大氣 International standard atmosphere
ISB	獨立旁波帶 Independent sideband
ISOL	孤立 Isolated

J - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

JAN	一月 January
JCC*	飛航管制聯合協調中心 Joint coordination center (air traffic control joint coordination center)
JTST	噴射氣流 Jet stream
JUL	七月 July
JUN	六月 June

K - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

KG	公斤 Kilograms
KHZ	千赫 Kilohertz
KIAS	節(指示空速) Knots indicated airspeed
KM	公里 Kilometers
KMH	每小時公里 Kilometers per hour
KPA	千帕 Kilopascal
KT	節 Knots
KW	千瓦 Kilowatts

L - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

...L	Left (preceded by runway designation number to identify a parallel runway) 左（置於跑道名稱後以識別平行跑道）
L	公升 Liter
L	定位臺（見中定位臺,外定位臺） Locator (see LM, LO)
L	低氣壓區或低氣壓中心 Low pressure area or the centre of low pressure
LAM	邏輯確認(電報型式代字) Logical acknowledgement (message type designator)
LAN	內陸 Inland
LAT	緯度或緯線 Latitude
LCA	本地或位置 Local or locally or location or located
LDA	可用之降落距離 Landing distance available
LDA*	左右定位輔助臺 Localizer type directional aid
LDAH	直昇機可用降落距離 Landing distance available, helicopter
LDG	降落 Landing
LDI	降落方向指示器 Landing direction indicator
LEN	長度 Length
LF	低頻(30 to 300 kHz) Low frequency (30 to 300 kHz)
LGT	燈光 Light or lighting
LGTD	置有燈光 Lighted
LIH	高亮度 Light intensity high
LIL	低亮度 Light intensity low
LIM	中亮度 Light intensity medium
LINE	線性（用於SIGMET報） Line (used in SIGMET)
LM	中定位臺 Locator, middle
LMT	本地時間 Local mean time
LNAV	左右導航 Lateral navigation
LNG	長（用於進場種類需要或請求） Long (used to indicate the type of approach desired or required)
LO	外定位臺 Locator, outer
LOC	左右定位臺 Localizer
LONG	經度或經線 Longitude
LORAN	長程導航系統 LORAN (long range air navigation system)
LOSS	喪失空速或頂風 Airspeed or headwind loss
LPV	左右定位臺性能垂直導引 Localizer performance with vertical guidance
LR	最後接收電報為...（用於航空固定通信服務作為程序信號） Last message received by me was...(to be used in AFS as a procedure signal)
LRG	長程 Long range
LS	最後發送電報為...（用於航空固定通信服務作為程序信號） The last message sent by me was... or Last message was...(to be used in AFS as a procedure signal)
LTA	低高度管制區域 Lower control area
LTD	限制 Limited
LTP	落地跑道頭 Landing threshold point
LV	輕度及風向不定 Light and variable (relating to wind)
LVE	離開 Leave or leaving
LVL	空層 Level
LVP	低能見度作業程序 Low visibility procedures
LYR	層 Layer or layered

M - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

...M	公尺（置於數字之後） Meters (preceded by figures)
M...	馬赫（置於數字之前） Mach number (followed by figures)
M...	跑道視程最小值（後接數字，用於METAR/SPECI報） Minimum value of runway visual range (followed by figures in METAR/SPECI)
MAA	最高許可高度 Maximum authorized altitude
MAG	磁的 Magnetic
MAHF	誤失進場等待航點 Missed approach holding fix
MAINT	維護 Maintenance
MALS*	中亮度進場燈系統 Medium-intensity approach lighting system
MALSF*	加設順序閃光燈之中亮度進場燈系統 Medium-intensity approach lighting system with sequenced flashers
MALSR*	加設跑道對正指示燈之中亮度進場燈系統 Medium-intensity approach lighting system with runway alignment indicator lights
MAP	航用圖表 Aeronautical maps and charts
MAPT	誤失進場點 Missed approach point
MAR	三月 March
MAR	海洋上 At sea
MATF	誤失進場轉彎航點 Missed approach turning fix
MATZ	軍用機場交通地帶 Military aerodrome traffic zone
MAX	最大 Maximum
MAY	五月 May
MBST	微爆流 Microburst
MCA	最低通過高度 Minimum crossing altitude
MCTR	軍用管制地帶 Military control zone
MCW	調幅波 Modulated continuous wave
MDA	最低下降高度 Minimum descent altitude
MDF	中頻定向臺 Medium frequency direction-finding station
MDH	最低下降實際高度 Minimum descent height
MEA	最低航路高度 Minimum en-route altitude
MEDEVAC	醫療運送飛航 Medical evacuation flight
MEHT	航空器通過跑道頭時駕駛員之最低眼高（用於目視進場滑降指示燈） Minimum eye height over threshold (for visual approach slope indicator systems)
MET	氣象 Meteorological or meteorology
METAR	機場例行天氣報告（氣象電碼） Aerodrome routine meteorological report (in meteorological code)
MET REPORT	當地例行觀測報告（簡縮明語） Local routine meteorological report (in abbreviated plain language)
MF	中頻（300 to 3000 kHz） Medium frequency (300 to 3000 kHz)
MHA	最低等待高度 Minimum holding altitude
MHDF	中頻及高頻定向臺（同址） Medium and high frequency direction-finding stations (at the same location)
MHVDF	中頻,高頻及特高頻定向臺（同址） Medium, high and very high frequency direction-finding stations (at the same location)
MHZ	兆赫 Megahertz
MID	中間點（用於跑道視程時） Mid-point (related to RVR)
MIFG	淺霧 Shallow fog
MIL	軍事的 Military
MIN	分鐘 Minutes
MIS	失去連絡...(發射臺識別)(用於航空固定通信服務作為程序信號) Missing...(transmission identification) (to be used in AFS as a procedure signal)
MKR	無線電信標 Marker radio beacon
MLS	微波降落系統 Microwave landing system
MM	中信標臺 Middle marker
MNH	北半球中緯度地區 Middle latitudes northern hemisphere
MNM	最小 Minimum
MNPS	最低航行性能規格 Minimum navigation performance specifications
MNT	監聽或監視 Monitor or monitoring or monitored
MNTN	保持 Maintain
MOA	軍事作業區 Military operating area
MOC	與障礙物間最低隔離高度 Minimum obstacle clearance (required)
MOCA	最低障礙物間隔高度 Minimum obstacle clearance altitude
MOD	中度（用於指示天氣現象、靜電干擾報告等程度） Moderate (used to indicate the intensity of weather phenomena, interference or static report, e.g. MOD RA=moderate rain)
MON	在山之上 Above mountains
MON	星期一 Monday
MOPS	最低作業性能標準 Minimum operational performance standards
MOV	移動 Move or moving or movement
MPS	公尺/秒 Meters per second
MRA	最低收訊高度 Minimum reception altitude
MRG	中距離 Medium range
MRP	飛行天氣報告點 ATS/MET reporting point
MS	負數或減去 Minus
MSA	最低區域高度 Minimum sector altitude
MSAS	MTSAT星基增強系統 Multi-functional transport satellite (MTSAT) satellite-based augmentation system
MSAW	最低安全高度警告 Minimum safe altitude warning
MSG	電報，音訊 Message
MSH	南半球中緯度地區 Middle latitudes southern hemisphere
MSL	平均海平面 Mean sea level
MSR	誤傳電報（用於航空固定通信服務作為程序信號） Message... (transmission identification) has been misrouted (to be used in AFS as a procedure signal)
MSSR	單脈波次級搜索雷達 Monopulse secondary surveillance radar
MT	山 Mountain
MTOM	最大起飛重量 Maximum take-off mass
MTU	公尺制 Metric units
MTW	山岳波 Mountain waves
MVDF	中頻及特高頻定向臺（同址） Medium and very high frequency direction-finding stations (at the same location)
MWO	氣象守視臺 Meteorological watch office
MX	混合狀積冰（白色與透明積冰混合） Mixed type of ice formation (white and clear)

N - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

N	無明顯傾向（RVR值在過去10分鐘的趨勢） No distinct tendency (in RVR during previous 10 minutes)
N	北或北緯 North or northern latitude
NADP	降低噪音離場程序 Noise abatement departure procedure
NASC	全國航空情報服務系統中心 National AIS system centre
NAT	北大西洋 North Atlantic
NAV	航行 Navigation
NAVAID	助航設施 Navigation aid
NB	北向 Northbound
NBFR	不得早於 Not before
NC	不變 No change
NCD	未偵測到雲（使用於自動編發之METAR/SPECI報） No cloud detected (use in automated METAR/SPECI)
NDB	歸航臺 Non-directional radio beacon
NDV	無方向性能見度（使用於自動編發之METAR/SPECI報） No directional variations available (use in automated METAR/SPECI)
NE	東北 North-east
NEB	東北向 North-eastbound
NEG	不、否定、未獲允許、不正確 No or negative or permission not granted or that is not correct
NGT	夜間 Night
NIL	無 None or I have nothing to send to you
NM	浬 Nautical miles
NML	正常 Normal
NN	未命名的 No name, unnamed
NNE	北北東 North-north-east
NNW	北北西 North-north-west
NO	否定（用於航空固定通信服務作為程序信號） No (negative) (to be used in AFS as a procedure signal)
NOF	國際飛航公告室 International NOTAM Office
NONSTD	非標準 Non-standard
NOSIG	無重大變化（用於趨勢降落預報） No significant change (used in trend-type landing forecasts)
NOTAM	飛航公告 A notice distributed by means of telecommunication containing information concerning the establishment, condition or change in any aeronautical facility, service, procedure or hazard, the timely knowledge of which is essential to personnel concerned with flight operations
NOTAMC	取消飛航公告 Cancelling NOTAM
NOTAMN	新的飛航公告 New NOTAM
NOTAMR	取代飛航公告 Replacing NOTAM
NOV	十一月 November
NOZ	正常作業區 Normal operating zone
NPA	非精確進場 Non-precision approach
NR	數字、號碼 Number
NRH	未聽到回答 No reply heard
NS	雨層雲 Nimbostratus
NSC	無顯著雲 Nil significant cloud
NSE	導航系統誤差 Navigation system error
NSW	無顯著(危害)天氣 Nil significant weather
NTL	國家的 National
NTZ	禁止穿越區 No transgression zone
NW	西北 North-west
NWB	西北向 North-westbound
NXT	最近的、下一個 Next

O - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

OAC	海洋區域管制中心 Oceanic area control centre
OAS	障礙物評估表面 Obstacle assessment surface
OBS	觀測 Observe or observed or observation
OBSC	不清晰 Obscure or obscured or obscuring
OBST	障礙物 Obstacle
OCA	海洋管制區域 Oceanic control area
OCA	障礙物間隔高度 Obstacle clearance altitude
OCC	掩蔽(燈光) Occulting ( light )
OCH	障礙物間隔實際高度 Obstacle clearance height
OCNL	間歇性，間歇的 Occasional or occasionally
OCS	障礙物間隔面 Obstacle clearance surface
OCT	十月 October
OFZ	障礙物淨空區 Obstacle free zone
OGN	起始（用於航空固定通信服務作為程序信號） Originate (to be used in AFS as a procedure signal)
OHD	正上方 Overhead
OIS	障礙物識別面 Obstacle identification surface
OK	同意,正確（用於航空固定通信服務作為程序信號） We agree or It is correct (to be used in AFS as a procedure signal)
OLDI	線上資料交換 On-line data interchange
OM	外信標臺 Outer marker
OPA	白色而不透明的積冰 Opaque, white type of ice formation
OPC	航務管制 Control indicated is operational control
OPMET	作業用氣象(資料) Operational meteorological (information)
OPN	開啟 Open or opening or opened
OPR	使用人或經營者或運用 Operator or operate or operative or operating or operational
OPS	作業、操作 Operations
O/R	請求 On request
ORD	順序 Order
OSV	海洋船站 Ocean station vessel
OTP	頂上 On top
OTS	組合航跡系統 Organized track system
OUBD	出境 Outbound
OVC	密雲 Overcast

P - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

P...	最大風速或跑道視程（後接數字，用於METAR/SPECI報） Maximum value of wind speed or runway visual range (followed by figures in METAR/SPECI and TAF)
P...	禁航區(後接識別名稱) Prohibited area (followed by identification)
PA	精確進場 Precision approach
PAC*	太平洋地區（國際民航組織） Pacific Region (ICAO)
PALS	精確進場燈光系統（指明型式） Precision approach lighting system (specify category)
PANS	飛航服務程序 Procedures for air navigation services
PAPI	精確進場滑降指示燈 Precision approach path Indicator
PAR	精確進場雷達 Precision approach radar
PARL	平行 Parallel
PATC...	精確進場地形圖 Precision approach terrain chart (followed by name/title)
PAX	旅客 Passenger(s)
PBC	性能通信 Performance-based communication
PBN	性能導航 Performance-based navigation
PBS	性能監視 Performance-based surveillance
PCD	進行 Proceed or proceeding
PCL	駕駛員控制的燈光 Pilot-controlled lighting
PCN	鋪面等級序號 Pavement classification number
PCT	百分比 Per cent
PDC	起飛前許可 Pre-departure clearance
PDG	程序設計梯度 Procedure design gradient
PER	性能 Performance
PERM	永久的 Permanent
PIB	飛航前簡報 Pre-flight information bulletin
PJE	跳傘演習 Parachute jumping exercise
PL	冰珠 Ice pellets
PLA	練習低空進場 Practice low approach
PLVL	現在空層 Present level
PN	需事先通知 Prior notice required
PNR	無法返航之點 Point of no return
PO	塵/沙旋風 Dust/sand whirls (dust devils)
POB	所載人員總數 Persons on board
POSS	可能 Possible
PPI	計畫位置指示器 Plan position indicator
PPR	需事先許可 Prior permission required
PPSN	現在位置 Present position
PRFG	機場部分被霧遮蔽 Aerodrome partially covered by fog
PRI	初級 Primary
PRKG	停車(機) Parking
PROB	可能性 Probability
PROC	程序 Procedure
PROP	螺旋槳 Propeller
PROV	臨時的 Provisional
PRP	任意點進場程序參考點 Point-in-space reference point
PS	正數或加 Plus
PSG	通過 Passing
PSN	位置 Position
PSP	穿孔鋼板 Pierced steel plank
PSR	初級搜索雷達 Primary surveillance radar
PSYS	氣壓系統 Pressure system(s)
PTN	程序轉彎 Procedure turn
PTS	極區航跡結構 Polar track structure
PWR	電力 Power

Q - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

QDL	你要問我一組方位嗎? （用於無線電報中之Q碼） Do you intend to ask me for a series of bearings? or I intend to ask you for a series of bearings (to be used in radiotelegraphy as a Q Code)
QDM	磁航向(無風) Magnetic heading (zero wind)
QDR	磁方位 Magnetic bearing
QFE	機場標高之大氣壓力(或跑道頭之大氣壓力) Atmospheric pressure at aerodrome elevation (or at runway threshold)
QFU	跑道之磁場方位 Magnetic orientation of runway
QGE	我距離你的電臺多遠?（用於無線電報中之Q碼） What is my distance to your station? or Your distance to my station is (distance figures and units) (to be used in radiotelegraphy as a Q Code)
QJH	我應轉我的測試帶嗎?(用於航空固定通信服務中之Q碼） Shall I run my test tape/a test sentence? or Run your test tape/a test sentence (to be used in AFS as a Q Code)
QNH	在地面上獲得標高指示之高度表撥定值 Altimeter sub-scale setting to obtain elevation when on the ground
QSP	你能免費傳訊給...嗎?（用於航空固定通信服務中之Q碼） Will you relay to...free of charge? or I will relay to...free of charge (to be used in AFS as a Q Code)
QTA	我應取消...號電報嗎? 或取消...號電報（用於航空固定通信服務中之Q碼） Shall I cancel telegram number...? or Cancel telegram number...(to be used in AFS as a Q Code)
QTE	真方位 True bearing
QTF	你能告訴我根據你控制的定向臺的方位，所得到我的電臺的位置嗎?（用於無線電報中之Q碼） Will you give me the position of my station according to the bearings taken by the D/F stations which you control? or The position of your station according to the bearings taken by the D/F stations that I control was...latitude...longitude (or other indication of position), class...at...hours (to be used in radiotelegraphy as a Q Code)
QUAD	象限 Quadrant
QUJ	你能指明到你電臺的真航跡嗎?（用於無線電報中之Q碼） Will you indicate the TRUE track to reach you? or The TRUE track to reach me is. . . degrees at. . . hours(to be used in radiotelegraphy as a Q Code)

R - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

...R	右(前接跑道號碼以分辨平行跑道)  Right (preceded by runway designation number to identify a parallel runway)
R	轉彎率 Rate of turn
R	紅色 Red
R...	輻向 (後接3碼數字) Radial from VOR (followed by three figures)
R...	限航區 (後接識別名稱) Restricted area (followed by identification)
R...	跑道(後接數字，用於METAR/SPECI報) Runway (followed by figures in METAR/SPECI)
R	收到（用於航空固定通信服務中作為程式信號） Received (acknowledgement of receipt )( to be used in AFS as a procedure signal )
RA	雨 Rain
RA	避撞諮詢 Resolution advisory
RA*	無線電高度表 Radio altimeter
RAC	飛航規則及飛航服務 Rules of the air and air traffic services
RAG	破損的或粗糙的 Ragged
RAG	跑道攔截索 Runway arresting gear
RAI	跑道對正指示燈 Runway alignment indicator
RAIM	接收器自主完整度監視 Receiver autonomous integrity monitoring
RASC	區域航空情報服務系統中心 Regional AIS system center
RASS	遠端高度表設定來源 Remote altimeter setting source
RB*	覆誦 Read back
RB	救護船 Rescue boat
RCA	到達巡航高度 Reach cruising altitude
RCC	搜救協調中心 Rescue coordination centre
RCF	無線電通信失效(電報型式代字) Radiocommunication failure (message type designator)
RCH	到達 Reach or reaching
RCL	跑道中心線 Runway centre line
RCLL	跑道中心線燈 Runway centre line light(s)
RCLR	再許可 Re-cleared
RCP	通信性能需求 Required communication performance
RDH	參考基準實際高度 Reference datum height
RDL	輻向 Radial
RDO	無線電 Radio
RDOACT	放射性 Radioactive
RE	先前的(如雨等天氣現象) Recent (used to qualify weather phenomena , e.g. RERA = recent rain)
REC	接收或接收機 Receive or Receiver
REDL	跑道邊燈 Runway edge light(s)
REF	參考 Reference to...or refer to...
REG	註冊 Registration
RENL	跑道末端燈 Runway end light(s)
REP	報告或報告點 Report or reporting or reporting point
REQ	請求 Request or requested
RERTE	重定航線 Re-route
RESA	跑道端安全區 Runway end safety area
RF	固定半徑之圓弧至航點（用於導航資料庫編碼） Constant radius arc to a fix
RFFS	救援與消防服務 Rescue and fire fighting services
RG	視程（燈光） Range (lights)
RHC	右航線 Right-hand circuit
RIF	飛航中重獲航管許可 Re-clearance in flight
RIME	霧淞(用於機場警報) Rime (used in aerodrome warnings)
RL	報告離開 Report leaving
RLA	轉達 Relay to
RLCE	要求途中改變空層 Request level change en-route
RLLS	跑道導引燈系統 Runway lead-in lighting system
RLNA	要求空層無法提供 Request level not available
RMK	備註 Remark
RNAV	區域航行 Area navigation (to be pronounced as "AR-NAV")
RNG	距離（無線電測得） Radio range
RNP	導航性能需求 Required navigation performance
ROBEX	區域氣象公告交換（計劃） Regional OPMET bulletin exchange (scheme)
ROC	爬升率 Rate of climb
ROCAF*	中華民國空軍 Republic of China Air Force
ROD	下降率 Rate of descent
RON	僅可收報 Receiving only
RPDS	參考路徑資料選擇碼 Reference path data selector
RPI	雷達位置指示器 Radar position indicator
RPL	長期飛航計畫 Repetitive flight plan
RPLC	取代或被取代 Replace or replaced
RPS	雷達位置符號 Radar position symbol
RPT	重覆或重發（用於航空固定通信服務作為程序信號） Repeat or I repeat (to be used in AFS as a procedure signal)
RQ	要求（用於航空固定通信服務作為程序信號） Request (to be used in AFS as a procedure signal)
RQMNTS	需求 Requirements
RQP	要求飛航計畫(電報型式代字) Request flight plan (message type designator)
RQS	要求飛航計畫補充資料(電報型式代字) Request supplementary flight plan (message type designator)
RR	報告到達 Report reaching
RRA	(或RRB、RRC…等；按順序)氣象延遲報（電報型式代字） (or RRB, RRC...etc., in sequence) Delayed meteorological message (message type designator)
RSC	搜救附屬中心 Rescue sub-centre
RSCD	跑道道面情況 Runway surface condition
RSP	雷達信標 Responder beacon
RSP	監視性能需求 Required surveillance performance
RSR	航路搜索雷達 En-route surveillance radar
RSS	和的平方根 Root sum square
RTD	延遲的（用於氣象延遲報；電報型式代字） Delayed (used to indicate delayed meteorological message; message type designator)
RTE	航線 Route
RTF	無線電話 Radiotelephone
RTG	無線電報 Radiotelegraph
RTHL	跑道頭燈 Runway threshold light(s)
RTIL*	跑道頭識別燈 Runway threshold identification lights
RTN	回航 Return or returned or returning
RTODAH	直昇機放棄起飛可用距離 Rejected take-off distance available, helicopter
RTS	復工 Return to service
RTT	無線電電傳印字機 Radioteletypewriter
RTZL	跑道著陸區燈 Runway touchdown zone light(s)
RUT	地區航路標準發射頻率 Standard regional route transmitting frequencies
RV	救護船 Rescue vessel
RVA	雷達引導區域 Radar vectoring area
RVR	跑道視程 Runway visual range
RVSM	縮減垂直隔離（介於飛航空層290及飛航空層410間） Reduced vertical separation minimum (300M (1000FT) between FL290 and FL410)
RWY	跑道 Runway

S - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

S	南或南緯 South or southern latitude
S...	海的狀態(後接數字，用於METAR/SPECI報) State of the sea (followed by figures in METAR/SPECI)
SA	沙 Sand
SALS	簡式進場燈光系統 Simple approach lighting system
SAN	檢疫或衛生 Sanitary
SAR	搜尋與救援 Search and rescue
SARPS	國際民航組織之標準及建議措施 Standards and Recommended Practices(ICAO)
SAT	星期六 Saturday
SATCOM	衛星通信 (用於同時參考語音及資料衛星通信或僅參考資料衛星通信) Satellite communication (used only when referring generally to both voice and data satellite communication or only data satellite communication)
SATVOICE	衛星語音通信 Satellite voice communication
SB	南向 Southbound
SBAS	星基增強系統 Satellite-based augmentation system
SC	層積雲 Stratocumulus
SCT	疏雲 Scattered
SD	標準差 Standard deviation
SDBY	稍候 Stand by
SDF	階梯下降定位點 Step down fix
SE	東南 South-east
SEA	海（與海面溫度及海的狀態一起使用） Sea (used in connection with sea-surface temperature and state of the sea)
SEB	東南向 South-eastbound
SEC	秒 Seconds
SECN	段 Section
SECT	區 Sector
SELCAL	選號呼叫系統 Selective calling system
SEP	九月 September
SER	服務 Service or servicing or served
SEV	嚴重的 Severe (used e.g. to qualify icing and turbulence reports )
SFC	地面 Surface
SG	雪粒 Snow grains
SGL	信號 Signal
SH...	陣...(後接天氣現象) Shower (followed by RA = rain, SN = snow, PL = ice pellets,GR = hail, GS = small hail and/or snow pellets or combinations thereof, e.g. SHRASN = showers of rain and snow )
SHF	極高頻（3000 MHz至30000MHz） Super high frequency (3000 MHz to 30000MHz)
SI	國際單位制 International system of units
SIAP*	標準儀器進場程序 Standard instrument approach procedure
SID	標準儀器離場 Standard instrument departure
SIF	雷達信標選擇識別特性 Selective identification feature
SIG	顯著的 Significant
SIGMET	影響航空器安全之航路天氣及大氣其他天氣情況 Information concerning en-route weather and other phenomena in the atmosphere that may affect the safety of aircraft operations
SIGWX*	顯著天氣 Significant weather
SIMUL	同時的 Simultaneous or simultaneously
SIWL	單輪負重 Single isolated wheel load
SKED	預定時程或預計 Schedule or scheduled
SLP	速度限制點 Speed limiting point
SLW	慢 Slow
SMC	地面活動管制 Surface movement control
SMR	機場場面雷達 Surface movement radar
SN	雪 Snow
SNOCLO	機場因積雪關閉（用於METAR/SPECI報） Aerodrome closed due to snow (used in the METAR/SPECI)
SNOWTAM	冰雪公告 Special series NOTAM notifying the presence or removal of hazardous conditions due to snow, ice, slush or standing water associated with snow, slush and ice on the movement area, by means of a specific format
SOC	爬升起始點 Start of climb
SPECI	機場特別天氣報告（氣象電碼） Aerodrome special meteorological report (in meteorological code)
SPECIAL	特別氣象報告（簡縮明語） Local special meteorological report (in abbreviated plain language)
SPI	特別位置識別脈衝 Special position indicator
SPL	飛航計畫補充資料（電報型式代字） Supplementary flight plan (message type designator)
SPOC	搜救接觸點 SAR point of contact
SPOT	定點風向風速之測報 Spot wind
SQ	颮 Squall
SQL	颮線 Squall line
SR	日出 Sunrise
SRA	搜索雷達進場 Surveillance radar approach
SRE	精確進場雷達系統之搜尋雷達 Surveillance radar element of precision approach radar system
SRG	短距離 Short range
SRR	搜尋與救援區 Search and rescue region
SRY	次級的 Secondary
SS	沙暴 Sandstorm
SS	Sunset 日沒
SSALR*	加設跑道對正指示燈之高亮度簡易進場燈光系統 Simplified short approach lighting system with runway alignment indicator lights
SSB	單旁波帶 Single sideband
SSE	南南東 South-south-east
SSR	次級搜索雷達 Secondary surveillance radar
SST	超音速運輸機 Supersonic transport
SSW	南南西 South-south-west
ST	層雲 Stratus
STA	直接進場 Straight-in approach
STAR	標準儀器到場航線 Standard instrument Arrival
STD	標準 Standard
STF	層狀雲 Stratiform
STN	電臺 Station
STNR	固定的，滯留的 Stationary
STOL	短場起降 Short take-off and landing
STS	狀況 Status
STWL	緩衝區燈 Stopway light(s)
SUBJ	受制於 Subject to
SUN	星期日 Sunday
SUP	飛航指南補充通知書 Supplement ( AIP Supplement )
SUPPS	地區補充程序 Regional supplementary procedures
SVC	公務 (僅用於電報型式) Service (message type only)
SVCBL	可用的 Serviceable
SVFR*	特種目視飛航 Special Visual Flight Rules
SW	西南 South-west
SWB	西南向 South-westbound
SWX	太空氣象 Space weather
SWXC	太空氣象中心 Space weather centre
SWY	緩衝區 Stopway

T - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

T	溫度 Temperature
...T	真方位(前接一方位以示相對於真北) True (preceded by a bearing to indicate reference to True North)
TA	轉換高度 Transition altitude
TA	接近警告 Traffic advisory
TAA	終端到場高度 Terminal arrival altitude
TACAN	太康臺 UHF tactical air navigation aid
TAF	機場預報（氣象電碼） Aerodrome forecast (in meteorological code)
TA/H	在指定高度/實際高度轉彎 Turn at an altitude/height
TAIL	順風 Tail wind
TAR	終端區域搜索雷達 Terminal area surveillance radar
TAS	真空速 True airspeed
TAX	滑行 Taxiing or taxi
TC	熱帶氣旋 Tropical cyclone
TCAC	熱帶氣旋警告中心 Tropical cyclone advisory centre
TCAS*	空中防撞系統 Traffic alert and collision avoidance system
TCAS RA	空中航情避撞諮詢警示 Traffic alert and collision avoidance system resolution advisory
TCH	通過跑道頭實際高度 Threshold crossing height
TCU	塔狀積雲 Towering cumulus
TDO	龍捲風 Tornado
TDZ	著陸區 Touchdown zone
TECR	技術理由 Technical reason
TEL	電話 Telephone
TEMPO	暫時的 Temporary or temporarily
TF	航跡至航點（用於導航資料庫編碼） Track to fix
TFC	交通 Traffic
TGL	連續起降 Touch-and-go landing
TGS	滑行導引系統 Taxiing guidance system
THR	跑道頭或跑道起點 Threshold
THRU	經 Through
THU	星期四 Thursday
TIBA	航空器航情廣播 Traffic information broadcast by aircraft
TIL	直到或至 Until
TIP...	直到通過...（某地） Until past....(followed by place)
TKOF	起飛 Take-off
TL...	直到（後接預報天氣變化結束時間） Till (followed by time by which weather change is forecast to end)
TLOF	起降區 Touchdown and lift-off area
TMA	終端管制區域Terminal control area
TN...	最低溫度（後接數字，用於TAF報） Minimum temperature (followed by figures in TAF)
TNA	轉彎高度 Turn altitude
TNH	轉彎實際高度 Turn height
TO...	至...(地點) To...(followed by place)
TOC	爬升頂端 Top of climb
TODA	可用之起飛距離 Take-off distance available
TODAH	直昇機可用起飛距離 Take-off distance available, helicopter
TOP	雲頂 Cloud top
TORA	可用之起飛滾行距離 Take-off run available
TOX	有毒的 Toxic
TP	轉彎點 Turning point
TR	航跡 Track
TRA	暫時保留空域 Temporary reserved airspace
TRANS	發射或發射機 Transmits or transmitter
TREND	趨勢預報 Trend forecast
TRG	訓練 Training
TRL	轉換空層 Transition level
TROP	對流層頂 Tropopause
TS	雷暴 Thunderstorm (in aerodrome reports and forecasts, TS used alone means thunder heard but no precipitation at the aerodrome)
TS...	雷暴（伴隨雨、雪、冰珠、冰雹、小冰雹或雪珠等天氣現象） Thunderstorm (followed by RA = rain, SN = snow, PL = ice pellets, GR = hail, GS = small hail and/or snow pellets or combinations thereof, e.g. TSRASN = thunderstorm with rain and snow)
TSUNAMI	海嘯(用於機場警報) Tsunami (used in aerodrome warnings)
TT	電傳印字機 Teletypewriter
TUE	星期二 Tuesday
TURB	亂流 Turbulence
T-VASIS	T型目視進場滑降指示燈 T visual approach slope indicator system
TVOR	終端多向導航臺 Terminal VOR
TWR	機場管制塔臺或機場管制 Aerodrome control tower or aerodrome control
TWY	滑行道 Taxiway
TX...	最高溫度（後接數字，用於TAF報） Maximum temperature (followed by figures in TAF)
TXL	滑行路徑 Taxilane
TXT	報文內容（用於航空固定通信服務作為程序信號） Text (when the abbreviation is used to request a repetition, the question mark (IMI) precedes the abbreviation, e.g. IMI TXT) (to be used in AFS as a procedure signal)
TYP	機型 Type of aircraft
TYPH	颱風 Typhoon

U - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

U	上升（RVR值在過去10分鐘的趨勢） Upward (tendency in RVR during previous 10 minutes )
UA	無人駕駛航空器 Unmanned aircraft
UAB	直到...通知 Until advised by...
UAC	高空區域管制中心 Upper area control centre
UAR	高空航線 Upper air route
UAS	無人駕駛航空器系統 Unmanned aircraft system
UAV*	無人飛行載具 Unmanned aerial vehicle
UDF	超高頻定向臺 Ultra high frequency direction-finding station
UFN	待後續通告 Until further notice
UHDT	因航情無法更高 Unable higher due traffic
UHF	超高頻 Ultra high frequency (300 to 3000 MHz)
UIC	高空情報中心 Upper information centre
UIR	高空飛航情報區 Upper flight information region
ULM	超輕型載具 Ultra light motorized aircraft
ULR	超長程 Ultra long range
UNA	不能 Unable
UNAP	不能同意 Unable to approve
UNL	無限的 Unlimited
UNREL	不可靠的 Unreliable
UP	不明降水（使用於自動編發之METAR/SPECI報） Unidentified precipitation (used in automated METAR/ SPECI)
U/S	無法使用的 Unserviceable
UTA	高空管制區域 Upper control area
UTC	世界標準時間 Coordinated Universal Time

V - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

...V...	平均風向變化（用於METAR/SPECI報，前後接數字，例如350V070） Variations from the mean wind direction (preceded and followed by figures in METAR/SPECI, e.g. 350V070)
VA	航向至指定高度（用於導航資料庫編碼） Heading to an altitude
VA	火山灰 Volcanic ash
VAAC	火山灰警告中心 Volcanic ash advisory centre
VAC...	目視進場圖 Visual approach chart (followed by name/title)
VAL	在山谷 In valleys
VAN	跑道管制車 Runway control van
VAR	視聽無線電導航臺 Visual-aural radio range
VAR	磁差 Magnetic variation
VASIS	目視進場滑降指示燈 Visual approach slope indicator systems
VC...	機場附近（後接天氣現象） Vicinity of the aerodrome (followed by FG = fog, FC = funnel cloud, SH = shower, PO = dust/sand whirls, BLDU = blowing dust, BLSA = blowing sand, BLSN = blowing snow, DS = duststorm, SS = sandstorm, TS = thunderstorm or VA = volcanic ash, e.g. VCFG = vicinity fog)
VCY	附近 Vicinity
VDF	特高頻定向臺 Very high frequency direction-finding station
VDP*	目視下降點 Visual Descent Point
VER	垂直的 Vertical
VFR	目視飛航規則 Visual flight rules
VHF	特高頻（30 to 300 MHz） Very high frequency (30 to 300 MHz)
VI	航向至攔截（用於導航資料庫編碼） Heading to an intercept
VIP	極重要人員 Very important person
VIS	能見度 Visibility
VLF	特低頻（3 to 30kHz） Very low frequency (3 to 30kHz)
VLR	特長程 Very long range
VM	航向至人工終止(引導)（用於導航資料庫編碼） Heading to a manual termination
VMC	目視天氣情況 Visual meteorological conditions
VNAV	垂直導航 (to be pronounced "VEE-NAV") Vertical navigation
VOL...	卷 (後接I、II...) Volume (followed by I, II...)
VOLMET	航空氣象資料 Meteorological information for aircraft in flight
VOR	特高頻多向導航臺 VHF omnidirectional radio range
VORTAC	多向導航太康臺 VOR and TACAN combination
VOT	機載多向導航臺收訊試驗設備 VOR airborne equipment test facility
VPA	垂直進場角度 Vertical path angle
VPT	依指定航跡進行目視操作 Visual maneuver with prescribed track
VRB	變動的 Variable
VSA	目視參考地面 By visual reference to the ground
VSP	垂直速度 Vertical speed
VTF	引導至最後進場 Vector to final
VTOL	垂直起降 Vertical take-off and landing
VV...	垂直能見度（後接數字，用於METAR/SPECI及TAF報） Vertical visibility (followed by figures in METAR/SPECI and TAF)

W - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

W...	海平面溫度（後接數字，用於METAR/SPECI報） Sea-surface temperature (followed by figures in METAR/SPECI)
W	西或西經 West or western longitude
W	白色 White
WAAS	廣域增強系統 Wide area augmentation system
WAC...	1:1,000,000世界航圖 World Aeronautical Chart-ICAO 1:1000000 (followed by name/title)
WAFC	世界區域預報中心 World area forecast centre
WB	西向 Westbound
WBAR	翼排燈 Wing bar lights
WDI	風向指示器 Wind direction indicator
WDSPR	廣佈的 Widespread
WED	星期三 Wednesday
WEF	自...生效 With effect from or effective from
WHO *	世界衛生組織 World Health Organization
WGS-84	世界大地系統-1984 World Geodetic System - 1984
WI	其中 Within
WID	寬 Width or wide
WIE	即時生效 With immediate effect or effective immediately
WILCO	照辦 Will comply
WIND	風 Wind
WIP	工程在進行中 Work in progress
WKN	減弱或減弱中 Weaken or weakening
WNW	西北西 West-north-west
WMO *	世界氣象組織 World Meteorological Organization
WO	不含 Without
WPT	航點 Way-point
WRNG	警告 Warning
WS	風切 Wind shear
WSPD	風速 Wind speed
WSW	西南西 West-south-west
WT	重量 Weight
WTSPT	水龍捲 Waterspout
WWW	全球資訊網 Worldwide web
WX	天氣 Weather
WXR	氣象雷達 Weather radar

X - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

X	橫過 Cross
XBAR	進場燈光系統之橫排燈 Crossbar (of approach lighting system)
XNG	橫過 Crossing
XS	天電（自然電磁波，天電干擾） Atmospherics

Y - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Y	黃色 Yellow
YCZ	跑道燈光之黃色注意地帶 Yellow caution zone (runway lighting)
YES	是（用於航空固定通信服務作為程序信號） Yes (affirmative) (to be used in AFS as a procedure signal)
YR	你的 Your

Z - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Z	世界標準時間(用於氣象電報) Coordinated Universal Time (in meteorological messages)