Narrative:

Was expecting to do ILS to runway 31R from ATIS and also ATC; then was given ILS runway 31L. At jfk when updating navs I must have the ILS frequency in navigation #1. On vectors; I joined the ILS to runway 31R. As soon as joining; the approach controller noticed on radar and advised to 'do not descend' and gave us a heading that was about 90 degrees left of the track for vectors back. Cause was an error on my part in not confirming the frequency in the #1 navigation. I had looked and did see the proper frequency; but it was in the #2 navigation; but not the #1 navigation. As far as preventing a recurrence; now I think even more so that it will not be mistaken as I have flown professionally for 20 yrs and have never had this happen to my knowledge previously.

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Original NASA ASRS Text

Title: G550 FLT CREW WAS EXPECTING THE APCH TO 31R; BUT SUBSEQUENTLY CLEARED FOR THE ILS TO 31L AT JFK. CAPT FAILED TO RETUNE FOR THE 31L ILS AND JOINED THE LOC FOR THE RIGHT.

Narrative: WAS EXPECTING TO DO ILS TO RWY 31R FROM ATIS AND ALSO ATC; THEN WAS GIVEN ILS RWY 31L. AT JFK WHEN UPDATING NAVS I MUST HAVE THE ILS FREQ IN NAV #1. ON VECTORS; I JOINED THE ILS TO RWY 31R. AS SOON AS JOINING; THE APCH CTLR NOTICED ON RADAR AND ADVISED TO 'DO NOT DSND' AND GAVE US A HDG THAT WAS ABOUT 90 DEGS L OF THE TRACK FOR VECTORS BACK. CAUSE WAS AN ERROR ON MY PART IN NOT CONFIRMING THE FREQ IN THE #1 NAV. I HAD LOOKED AND DID SEE THE PROPER FREQ; BUT IT WAS IN THE #2 NAV; BUT NOT THE #1 NAV. AS FAR AS PREVENTING A RECURRENCE; NOW I THINK EVEN MORE SO THAT IT WILL NOT BE MISTAKEN AS I HAVE FLOWN PROFESSIONALLY FOR 20 YRS AND HAVE NEVER HAD THIS HAPPEN TO MY KNOWLEDGE PREVIOUSLY.

Data retrieved from NASA's ASRS site as of May 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.