Skratky a kódy, potrebné na dekódovanie a kódovanie dokumentov, ktoré sú plne v súlade s ICAO (International Civil Aviation Organization) – Dokument 8400 „Skratky a kódy“.

Skratka / značkaVýznam skratky / značky
WWest or western longitude
WWhite
W…Sea-surface temperature (followed by figures in METAR/SPECI)
WAASWide area augmentation system
WACWorld Aeronautical Chart — ICAO 1:1 000 000 (folio-wed by name/title)
WAFCWorld area forecast centre
WBWestbound
WBARWing bar lights
WDIWind direction indicator
WDSPRWidespread
WEDWednesday
WEFWith effect from or effective from
WGS-84World Geodetic System — 1984
WIWithin
WIDWidth
WIEWith immediate effect or effective immediately
WILCOWill comply
WINDWind
WINTEMForecast upper wind and temperature for aviation
WIPWork in progress
WKNWeaken or weakening
WNWWest-north-west
WOWithout
WPTWay-point
WRNGWarning
WSWind shear
WSPDWind speed
WSWWest-south-west
WTWeight
WTSPTWaterspout
WWWWorldwide web
WXWeather
XCross
XBARCrossbar (of approach lighting system)
XNGCrossing
XSAtmospherics
YYellow
YCZYellow caution zone (runway lighting)
YRYour
ZCoordinated Universal Time (in meteorological messages)