Plain English Meaning
A free phone number pilots in the U.S. can call to talk to a weather briefer, file a flight plan, or get other flight planning help.
Full Definition
The toll-free telephone number used in the United States to reach a Flight Service Station (FSS) for preflight weather briefings, flight plan filing, and other pilot services provided by Flight Service.
Context Anchor
Seen in FAA material about Flight Service Stations and preflight weather briefings.
Derivation
The letters WX are the long-standing aviation and meteorology shorthand for 'weather,' and BRIEF refers to the weather briefing the pilot receives. The number spells out its purpose on a standard telephone keypad.
Why Pilots Care
Provides direct access to current, official weather and NOTAM data required for safe preflight planning and decision-making.
Intuition Check
Do not treat 1-800-WX-BRIEF as just a general weather hotline. In aviation use, it connects pilots with Flight Service for pilot-specific weather and flight planning support.
Example Sentence 1
Before departing on the cross-country, she called 1-800-WX-BRIEF to get a standard weather briefing and file her VFR flight plan.
Example Sentence 2
She used 1-800-WX-BRIEF to request an outlook briefing for her planned cross-country flight the next day.