When I was a controller in south Texas, a Piper Tripacer called me in the tower asking to transition through the airspace.
Me:
“Piper 123, squawk 4352.”
Tripacer:
“What’s that, tower?”
Me:
“Piper 123, squawk 4352.”
Tripacer:
“Tower, I don’t understand you.”
Me:
“Piper 123, your transponder code: 4352. Do you have a transponder on board?”
Tripacer:
“No, just me and the wife.”
Me:
“Piper 123, transition approved.”
Grant Shinn