Narrative:

While on an IFR flight plan from sus to rdu, we were on vectors to final approach for runway 23R. As PIC, I briefed for our approach to a fill-in copilot, who I had never flown with before. The copilot dialed in the localizer frequency for runway 23L instead of runway 23R. We were being vectored from the north, heading south to intercept the localizer runway 23R. With the wrong frequency in my radio, I flew through the localizer path for runway 23R and intercepted localizer path for runway 23L. The tower noticed this deviation and gave vectors back to the runway 23R course. This could have been prevented by doublechking the localizer frequency.

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Original NASA ASRS Text

Title: CAPT OF AN MDT FLEW THROUGH THE FINAL ILS COURSE DURING LOC INTERCEPTION DUE TO THE FO SETTING THE WRONG PARALLEL RWY UP FOR THE APCH.

Narrative: WHILE ON AN IFR FLT PLAN FROM SUS TO RDU, WE WERE ON VECTORS TO FINAL APCH FOR RWY 23R. AS PIC, I BRIEFED FOR OUR APCH TO A FILL-IN COPLT, WHO I HAD NEVER FLOWN WITH BEFORE. THE COPLT DIALED IN THE LOC FREQ FOR RWY 23L INSTEAD OF RWY 23R. WE WERE BEING VECTORED FROM THE N, HDG S TO INTERCEPT THE LOC RWY 23R. WITH THE WRONG FREQ IN MY RADIO, I FLEW THROUGH THE LOC PATH FOR RWY 23R AND INTERCEPTED LOC PATH FOR RWY 23L. THE TWR NOTICED THIS DEV AND GAVE VECTORS BACK TO THE RWY 23R COURSE. THIS COULD HAVE BEEN PREVENTED BY DOUBLECHKING THE LOC FREQ.

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.