Definition
Headings issued by air traffic control to delay an aircraft, typically by routing it away from its planned course or extending its path, in order to absorb time before clearing it for the next phase of flight, such as an approach or arrival fix.
Plain English
Headings ATC gives you to take you off your direct path so you arrive later than you otherwise would. Instead of holding you in a circle, they steer you on a longer route to use up time.
Context Anchor
You may receive delaying vectors during instrument flying, especially before an approach or while descending toward an airport.
Derivation
Delay comes from the Old French 'delaier,' meaning to put off or postpone. A vector in aviation is simply a heading assigned by ATC. Together, the term means a heading whose purpose is to postpone arrival.
Why Pilots Care
Maintains safe aircraft spacing, prevents conflicts, and allows orderly traffic flow without requiring a hold.
Intuition Check
Do not read “vectors” here as a math term or as general advice. In this context, vectors are specific headings assigned by air traffic control, and “delaying” means the route is being lengthened on purpose.
Example Sentence 1
Approach control issued delaying vectors north of the field while spacing was created on final.
Example Sentence 2
Instead of entering the hold, the controller used delaying vectors to adjust our arrival timing.