Narrative:

Aircraft Y; air carrier abcd was #1 aircraft waiting to depart runway 18L. I heard local control east clear aircraft Y; air carrier abcd to tiph runway 18L. I heard a garbled readback that sounded like aircraft said runway 18R. The local control east said confirm 'aircraft abcd runway 18L tiph' and again heard a garbled response. I turned around to look at runway 18R and observed an aircraft (aircraft X; air carrier abbd) taxiing onto runway 18R with a B737 about a 1 mi final. I told local control west to send the B737 around and local control east to tell aircraft X; air carrier abbd to taxi off runway 18R. Aircraft X; air carrier abbd should have been on tower frequency 126.4; but instead tuned in wrong frequency of 118.1. Supplemental information from acn 709103: we were following a jet. He was holding short of runway 18R and we were behind him. I put in tower frequency of 118.1 which I believed to be the right frequency and I briefly glanced at my chart. An air carrier landed and the aircraft ahead was cleared onto the runway and for takeoff and I'm not quite sure that the tower read runway '18R or 18L;' but he may have said it. The aircraft ahead of us taxied onto the runway and took off at the same time the tower said. At this time; we taxied up to the hold short line and waited for a call from tower. I looked and saw that the landing aircraft was on a 5-6 mi final and at that time tower called and I believed that he said aircraft X; air carrier abbd; position and hold runway 18R; so I read back the clearance putting emphasis on the call sign and on the runway; then my captain started to taxi onto the runway. A second or two later; tower said 'wait; aircraft X; air carrier abbd; what is your first fix?' we replied 'naley' and he said 'hold your position.' at this time; the nose of the aircraft was just on the edge of the runway. Then tower said taxi onto the runway and off at the nearest taxiway. After we were on the taxiway he said 'contact tower on 126.4.'

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Original NASA ASRS Text

Title: CRJ900 FLT CREW HAS A RWY INCURSION AT CLT.

Narrative: ACFT Y; ACR ABCD WAS #1 ACFT WAITING TO DEPART RWY 18L. I HEARD LCL CTL E CLR ACFT Y; ACR ABCD TO TIPH RWY 18L. I HEARD A GARBLED READBACK THAT SOUNDED LIKE ACFT SAID RWY 18R. THE LCL CTL E SAID CONFIRM 'ACFT ABCD RWY 18L TIPH' AND AGAIN HEARD A GARBLED RESPONSE. I TURNED AROUND TO LOOK AT RWY 18R AND OBSERVED AN ACFT (ACFT X; ACR ABBD) TAXIING ONTO RWY 18R WITH A B737 ABOUT A 1 MI FINAL. I TOLD LCL CTL W TO SEND THE B737 AROUND AND LCL CTL E TO TELL ACFT X; ACR ABBD TO TAXI OFF RWY 18R. ACFT X; ACR ABBD SHOULD HAVE BEEN ON TWR FREQ 126.4; BUT INSTEAD TUNED IN WRONG FREQ OF 118.1. SUPPLEMENTAL INFO FROM ACN 709103: WE WERE FOLLOWING A JET. HE WAS HOLDING SHORT OF RWY 18R AND WE WERE BEHIND HIM. I PUT IN TWR FREQ OF 118.1 WHICH I BELIEVED TO BE THE RIGHT FREQ AND I BRIEFLY GLANCED AT MY CHART. AN ACR LANDED AND THE ACFT AHEAD WAS CLRED ONTO THE RWY AND FOR TKOF AND I'M NOT QUITE SURE THAT THE TWR READ RWY '18R OR 18L;' BUT HE MAY HAVE SAID IT. THE ACFT AHEAD OF US TAXIED ONTO THE RWY AND TOOK OFF AT THE SAME TIME THE TWR SAID. AT THIS TIME; WE TAXIED UP TO THE HOLD SHORT LINE AND WAITED FOR A CALL FROM TWR. I LOOKED AND SAW THAT THE LNDG ACFT WAS ON A 5-6 MI FINAL AND AT THAT TIME TWR CALLED AND I BELIEVED THAT HE SAID ACFT X; ACR ABBD; POS AND HOLD RWY 18R; SO I READ BACK THE CLRNC PUTTING EMPHASIS ON THE CALL SIGN AND ON THE RWY; THEN MY CAPT STARTED TO TAXI ONTO THE RWY. A SECOND OR TWO LATER; TWR SAID 'WAIT; ACFT X; ACR ABBD; WHAT IS YOUR FIRST FIX?' WE REPLIED 'NALEY' AND HE SAID 'HOLD YOUR POS.' AT THIS TIME; THE NOSE OF THE ACFT WAS JUST ON THE EDGE OF THE RWY. THEN TWR SAID TAXI ONTO THE RWY AND OFF AT THE NEAREST TXWY. AFTER WE WERE ON THE TXWY HE SAID 'CONTACT TWR ON 126.4.'

Data retrieved from NASA's ASRS site as of January 2009 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.