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Jun 27, 2026 · 5 min read

“Say again,” “unable,” and the words that buy you time

Every pilot falls behind the radio sometimes — controllers included. The difference between a pro and a rattled student is a handful of short phrases that buy time and keep you in command.

“Say again”

When you missed it or did not understand, say “say again.” It is not an admission of weakness — it is the correct, expected call, and it is always better than reading back a guess.

“Say again all after…”

When you caught part of it, ask for just the part you missed: “say again all after runway.” It is faster for both of you than repeating the whole transmission.

“Unable”

When ATC asks for something you cannot safely do — a climb rate you do not have, a heading into weather — say “unable.” You are pilot in command, and they will give you an alternative.

“Standby”

When you need a moment before you can respond, say “standby.” It tells the controller you heard them and will be right back, so they stop repeating the call.

Do not go silent

The worst response to falling behind is saying nothing — the controller assumes you did not hear and starts stacking up repeats. A quick “standby” keeps the frequency calm.

The real fix is slowing down

When you are behind, the answer is almost always to slow down, fly the airplane first, and use these phrases to reset the pace. They are tools, not failures.

Drill them

These phrases only help if they are reflexive. Practice the calls and read-backs on Clearspar until “say again” and “unable” come out without thinking. Free, no mic.

Practice these calls with instant grading — free.

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