Definition
A standard three-letter abbreviation for the weekday Friday, used in aviation publications, NOTAMs, schedules, and operational notices to indicate that information applies to that specific day of the week.
Plain English
Short for Friday. When you see FRI in a NOTAM or schedule, it means the item applies on Fridays.
Context Anchor
Seen in airport notices, flight planning information, and published schedules that list days of operation or closure.
Why Pilots Care
Day-of-week abbreviations matter because many NOTAMs and procedures are only active on specific days. Misreading FRI could lead a pilot to assume an airspace restriction or service is active when it isn't, or vice versa.
Intuition Check
FRI does not carry any special technical meaning beyond the ordinary day of the week; it is used only as a date abbreviation in official aviation text.
Example Sentence 1
The NOTAM stated the restricted area would be active MON–FRI from 0800 to 1700 local time.