Narrative:

I had landed IFR at cxy earlier in the day. Clearing the runway I had received taxi instructions on tower frequency. When ready to depart I copied ATIS and called ground control for departure clearance and taxi instructions. I was cleared out of parking and told to standby for clearance. Unknowingly, I was talking to middletown ground control across the susquehanna river from cxy. I thought the ground controller was confused when she asked me if I wanted to amend my clearance to depart harrisburg. That's what I filed for cxy is listed under harrisburg, PA, but harrisburg international, the main airport for harrisburg, is listed under middletown, mdt. Tower controllers at cxy saw me taxiing and, unable to reach me on cxy ground control, called mdt ground who asked me to contact cxy ground. No conflict. I was the only aircraft moving on the field at the time but quite embarrassing. Always check and doublechk communication frequency and if confusion is suspected, resolve it.

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Original NASA ASRS Text

Title: PLT REQUEST FOR IFR DEP CLRNC WAS ON WRONG FREQ. WAS TALKING TO TWR AT ADJACENT ARPT NOT TWR FOR THE ARPT HE WAS ONE.

Narrative: I HAD LANDED IFR AT CXY EARLIER IN THE DAY. CLRING THE RWY I HAD RECEIVED TAXI INSTRUCTIONS ON TWR FREQ. WHEN READY TO DEPART I COPIED ATIS AND CALLED GND CTL FOR DEP CLRNC AND TAXI INSTRUCTIONS. I WAS CLRED OUT OF PARKING AND TOLD TO STANDBY FOR CLRNC. UNKNOWINGLY, I WAS TALKING TO MIDDLETOWN GND CTL ACROSS THE SUSQUEHANNA RIVER FROM CXY. I THOUGHT THE GND CTLR WAS CONFUSED WHEN SHE ASKED ME IF I WANTED TO AMEND MY CLRNC TO DEPART HARRISBURG. THAT'S WHAT I FILED FOR CXY IS LISTED UNDER HARRISBURG, PA, BUT HARRISBURG INTL, THE MAIN ARPT FOR HARRISBURG, IS LISTED UNDER MIDDLETOWN, MDT. TWR CTLRS AT CXY SAW ME TAXIING AND, UNABLE TO REACH ME ON CXY GND CTL, CALLED MDT GND WHO ASKED ME TO CONTACT CXY GND. NO CONFLICT. I WAS THE ONLY ACFT MOVING ON THE FIELD AT THE TIME BUT QUITE EMBARRASSING. ALWAYS CHK AND DOUBLECHK COM FREQ AND IF CONFUSION IS SUSPECTED, RESOLVE IT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.