Narrative:

We came out of holding to pappi intersection then vectors to final. It was hazy and we received vectors for ILS runway 27R at ord. While preparing for the ILS runway 27R, we were given traffic going to the ILS runway 27L. I was distraction and never dialed in the localizer frequency to runway 27R. I was on ord VOR frequency 113.9. So when I armed the localizer to capture, it actually armed the VOR. I saw the annunciation in the FMA but was concentrating on the traffic. Although he was close horizontally, we appeared to have good vertical separation. Having been in other parallel ILS sits and other sits of close proximity to other aircraft, I was not concerned. Also, the first officer said he had idented the localizer frequency and I did not doublechk at that moment. I normally verify all idents. I then looked at my FMA and saw the VOR track annunciation and realized my mistake. I corrected and idented the proper frequency and turned 30 degrees to get on course. We landed uneventfully. ATC asked us if he had cleared us for the approach or just to intercept localizer shortly before we found our mistake. ATC did not advise us if we caused a conflict or not.

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Original NASA ASRS Text

Title: MD80 CREW TRIED TO INTERCEPT THE LOC WITH A VOR FREQ TUNED IN.

Narrative: WE CAME OUT OF HOLDING TO PAPPI INTXN THEN VECTORS TO FINAL. IT WAS HAZY AND WE RECEIVED VECTORS FOR ILS RWY 27R AT ORD. WHILE PREPARING FOR THE ILS RWY 27R, WE WERE GIVEN TFC GOING TO THE ILS RWY 27L. I WAS DISTR AND NEVER DIALED IN THE LOC FREQ TO RWY 27R. I WAS ON ORD VOR FREQ 113.9. SO WHEN I ARMED THE LOC TO CAPTURE, IT ACTUALLY ARMED THE VOR. I SAW THE ANNUNCIATION IN THE FMA BUT WAS CONCENTRATING ON THE TFC. ALTHOUGH HE WAS CLOSE HORIZLY, WE APPEARED TO HAVE GOOD VERT SEPARATION. HAVING BEEN IN OTHER PARALLEL ILS SITS AND OTHER SITS OF CLOSE PROX TO OTHER ACFT, I WAS NOT CONCERNED. ALSO, THE FO SAID HE HAD IDENTED THE LOC FREQ AND I DID NOT DOUBLECHK AT THAT MOMENT. I NORMALLY VERIFY ALL IDENTS. I THEN LOOKED AT MY FMA AND SAW THE VOR TRACK ANNUNCIATION AND REALIZED MY MISTAKE. I CORRECTED AND IDENTED THE PROPER FREQ AND TURNED 30 DEGS TO GET ON COURSE. WE LANDED UNEVENTFULLY. ATC ASKED US IF HE HAD CLRED US FOR THE APCH OR JUST TO INTERCEPT LOC SHORTLY BEFORE WE FOUND OUR MISTAKE. ATC DID NOT ADVISE US IF WE CAUSED A CONFLICT OR NOT.

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.