"Delta 2243, please check your transponder on."
"Delta 2192, please check your transponder on."
"Uh Delta 1952, please check your transponder on."
"Delta 2452, please check your transponder on."
"Delta 1432, please check your transponder on."
"Delta 1952, please check your transponder on again."
"Delta 1924, please check your transponder on."
"Delta 2210, please check your transponder on."
"Delta 932, please check your transponder on."
"Delta 176, please check your transponder on."
"Delta 653, please check your transponder on."
"Delta 1201, please check your transponder on."
"Delta 1542, please check your transponder on."
"Delta 1650, please check your transponder on."
"Delta 1821, please check your transponder on."