= Hazardous Inflight Weather Advisory Service
{wiki=Hazardous_Inflight_Weather_Advisory_Service}
The Hazardous Inflight Weather Advisory Service (HIWAS) is a program developed by the Federal Aviation Administration (FAA) in the United States to provide pilots with critical information about hazardous weather conditions that may impact flight safety. It is particularly designed to deliver timely and relevant information to pilots flying in airspace where traditional weather reporting may not be as readily available.
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