Definition
A piece of information transmitted between parties in the aviation system, typically in written or coded form, such as a NOTAM text block, an ACARS data link transmission, a weather product update, or an ATC service advisory.
Plain English
A short written communication sent through aviation channels, like a notice, alert, or piece of information passed from one source to another.
Context Anchor
Seen in aviation abbreviation lists, preflight notices, and other short-form aviation text where space is limited.
Derivation
Message comes through French from a Latin word meaning “to send.” That fits the aviation use: a message is information that has been sent from one place or person to another.
Why Pilots Care
Recognizing MSG prevents a pilot from pausing over a simple abbreviation when reading time-sensitive aviation information.
Intuition Check
MSG is not a special aircraft system or procedure here. In this context, it just means message.
Example Sentence 1
The NOTAM included an MSG advising pilots of unlit obstructions near the approach end of Runway 27.
Example Sentence 2
ATC sent an MSG confirming the revised clearance.