EASA SIB InFO-25003
Use of Liquid Water Equivalent System (LWES)
InFO 25003 is an informational document from the FAA Flight Standards Service reminding pilots and operators about the proper use of the Liquid Water Equivalent System (LWES) when operating in snow and ice conditions. It emphasizes that while LWES can provide precise weather data, pilots should also consider Meteorological Aerodrome Reports (METAR) and visual observations to ensure safe takeoff decisions. This guidance applies broadly to all aircraft operating in freezing contaminant conditions.
Safety Information BulletinFlight OpsSafety Mgmt