Definition
A NOTAM and aeronautical publication contraction meaning 'through,' used to indicate a continuous span between two points, times, or dates without gaps.
Plain English
A short way of writing 'through' in NOTAMs and official notices, meaning everything from the first item to the last, with nothing skipped in between.
Context Anchor
Seen in NOTAMs and other shortened aviation notices that list time periods, dates, days, route segments, or affected areas.
Derivation
THRU is a shortened spelling of “through.” Aviation notices use shortened forms like this to save space and make long operational messages quicker to read.
Why Pilots Care
Misreading a span can cause a pilot to plan into a closed runway or restricted period. 'THRU' means the end date or item is included, not excluded.
Intuition Check
Do not read THRU as an instruction to fly through something. In this context, it usually marks the span from a start point to an end point.
Example Sentence 1
The NOTAM stated that Runway 14/32 was closed MON THRU WED for resurfacing.
Example Sentence 2
Temporary flight restriction in effect 1200 THRU 1800 due to aerial refueling.