Narrative:

On approach into mco we were initially assigned runway 17L. We requested 18R and were told it was on request. The ILS frequency for 17L was Nav1 primary and 18R was secondary. Approach subsequently cleared us for 18R with a heading of 210 to capture. Sic reprogrammed the FMS for 18R. I didn't realize that he had already switched my nav to 18R and I accidently reselected the ILS for 17L. I had selected nav and armed approach mode. The aircraft began to capture ILS for 17L. I could see from the mfd that we were not in correct position for capturing 18R. In order to correct the error; initially; I pressed tcs and manually began to turn the aircraft towards a proper intercept course for 18R. I stated to my copilot that the configuration wasn't right because I could see on the mfd that we were left of final approach course but my ILS showed we were well right. The sic then reverified frequencies and discovered the left ILS was still on 17L. He switched to 18R. ATC noticed we weren't capturing ILS and gave us a heading of 210 to intercept. While I was hand flying with tcs engaged; I deviated slightly in altitude and speed but corrected both when ILS 18R was re-engaged. ATC made no mention of the event and the rest of the approach went normally.pilot monitoring could have verbalized that he was switching nav to ILS for new runway. I should have verified the switch had been accomplished before manually selecting the nav frequency myself.

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Original NASA ASRS Text

Title: Air taxi Captain reported that while on an ILS approach to MCO; the FMS was programmed for Runway 18R; but had the localizer for Runway 17L on the left Nav radio. The Copilot switched it to the Runway 18R frequency and the approach was successfully completed.

Narrative: On approach into MCO we were initially assigned runway 17L. We requested 18R and were told it was on request. The ILS frequency for 17L was Nav1 primary and 18R was secondary. Approach subsequently cleared us for 18R with a heading of 210 to capture. SIC reprogrammed the FMS for 18R. I didn't realize that he had already switched my Nav to 18R and I accidently reselected the ILS for 17L. I had selected Nav and armed approach mode. The aircraft began to capture ILS for 17L. I could see from the MFD that we were not in correct position for capturing 18R. In order to correct the error; initially; I pressed TCS and manually began to turn the aircraft towards a proper intercept course for 18R. I stated to my copilot that the configuration wasn't right because I could see on the MFD that we were left of final approach course but my ILS showed we were well right. The SIC then reverified frequencies and discovered the left ILS was still on 17L. He switched to 18R. ATC noticed we weren't capturing ILS and gave us a heading of 210 to intercept. While I was hand flying with TCS engaged; I deviated slightly in altitude and speed but corrected both when ILS 18R was re-engaged. ATC made no mention of the event and the rest of the approach went normally.Pilot monitoring could have verbalized that he was switching Nav to ILS for new runway. I should have verified the switch had been accomplished before manually selecting the Nav frequency myself.

Data retrieved from NASA's ASRS site 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.