Definition
A NOTAM contraction meaning 'to facility,' used to indicate a distance, bearing, or course measured toward a specified navigation facility (such as a VOR or NDB) rather than away from it.
Plain English
A short way of writing 'to the facility.' It tells you that whatever distance or direction is being given is measured heading toward the navigation aid, not away from it.
Context Anchor
Seen in NOTAM contractions and other shortened FAA text where space is limited.
Derivation
A simple contraction of the phrase 'to facility.' NOTAMs are written in compressed text to save space, so common phrases get shortened to a few letters.
Why Pilots Care
Correct interpretation of TFAC prevents misreading runway, approach, or facility status that directly affects go/no-go decisions.
Intuition Check
Do not read “facility” here as just any building. In this aviation context, it means the specific aviation facility named in the notice.
Example Sentence 1
The NOTAM listed the outage as 5 NM TFAC, meaning five nautical miles measured toward the VOR.
Example Sentence 2
Pilots reviewed all TFAC restrictions before filing the IFR flight plan.