10/15/2026
Did you get this one right? 👀
✅ The answer is C: After ATC abbreviates it first.
Hearing shortened call signs on frequency can make it seem like you can shorten yours whenever you’re ready... Not quite.
On initial contact, use your full call sign. Once communications are established, ATC may initiate the abbreviated version. After ATC shortens it, you can use that abbreviated call sign in subsequent contacts with that controller.
And one more detail worth remembering: if similar-sounding call signs are on the frequency, call signs should not be abbreviated. 👍
It’s a small radio habit, but an important one to get right!
Share this with another student pilot and see if they got it right too!