Definition
A NOTAM contraction meaning 'delete,' used to indicate that a previously published item, line, or piece of information is to be removed or is no longer in effect.
Plain English
Short for 'delete.' When you see DLT in a NOTAM, it means something that was there before is being taken out or cancelled.
Context Anchor
Seen in FAA acronym, abbreviation, and NOTAM contraction lists, and in NOTAM-style text where space is kept short.
Derivation
DLT is made from the main consonant sounds in “delete.” NOTAM contractions often shorten common words this way so important information can be written compactly.
Why Pilots Care
Ensures pilots and controllers remove outdated or incorrect details so flight planning and safety information stays accurate.
Intuition Check
DLT does not mean “delay” or “Delta” here. In this FAA contraction context, it means “delete” — remove the referenced information.
Example Sentence 1
The updated NOTAM included 'DLT' next to the earlier taxiway closure, showing that the closure had been lifted.
Example Sentence 2
After the correction, the controller transmitted DLT for the old departure procedure.