Narrative:

We departed runway 32R from seoul, korea (kimpo international) on the golf departure (enclosed). The captain and I had anyang VOR (115.1) set with 120 degrees in the window. Shortly after takeoff we realized we weren't receiving DME, so we both switched over to kip VOR (113.6) to get DME for 5 DME or 2300 ft turn. We forgot to switch back to 115.1. After turn to 220 degrees heading we joined the kip 300 degree radial instead of sel 300 degree radial. We went slightly through the kip 300 degree radial to the south and picked up about a 100 degree heading to rejoin. This put us on a heading toward rk (P) 73A and B. At the time the crew was discussing why the radial was joined so quickly and sensed all was not normal. The controller came on and issued us a turn to 180 degrees immediately. We complied and while we were in the turn, he reissued a turn to 240 degrees. It was at this point we both realized what we had done. We were then given direct anyang on course. We never came near P 73A and B as we were always west of the airport but our easterly heading got the controller very excited. The remainder of the flight was uneventful. As a footnote, this was day 2 of a 5 day trip. On the first day we flew from ewr-nrt. We laid over in nit for approximately 25 hours. On the second day we went nit- sel-nrt. We left nit at approximately XX00 local which is OY00 'body' time. This is back side of the clock flying. I've flown a lot of trips like this one and the second day always seems to be the most difficult.

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Original NASA ASRS Text

Title: FLC TUNES WRONG VOR IN ORDER TO RECEIVE DME INFO. NAV ERROR OCCURS.

Narrative: WE DEPARTED RWY 32R FROM SEOUL, KOREA (KIMPO INTL) ON THE GOLF DEP (ENCLOSED). THE CAPT AND I HAD ANYANG VOR (115.1) SET WITH 120 DEGS IN THE WINDOW. SHORTLY AFTER TKOF WE REALIZED WE WEREN'T RECEIVING DME, SO WE BOTH SWITCHED OVER TO KIP VOR (113.6) TO GET DME FOR 5 DME OR 2300 FT TURN. WE FORGOT TO SWITCH BACK TO 115.1. AFTER TURN TO 220 DEGS HDG WE JOINED THE KIP 300 DEG RADIAL INSTEAD OF SEL 300 DEG RADIAL. WE WENT SLIGHTLY THROUGH THE KIP 300 DEG RADIAL TO THE S AND PICKED UP ABOUT A 100 DEG HDG TO REJOIN. THIS PUT US ON A HDG TOWARD RK (P) 73A AND B. AT THE TIME THE CREW WAS DISCUSSING WHY THE RADIAL WAS JOINED SO QUICKLY AND SENSED ALL WAS NOT NORMAL. THE CTLR CAME ON AND ISSUED US A TURN TO 180 DEGS IMMEDIATELY. WE COMPLIED AND WHILE WE WERE IN THE TURN, HE REISSUED A TURN TO 240 DEGS. IT WAS AT THIS POINT WE BOTH REALIZED WHAT WE HAD DONE. WE WERE THEN GIVEN DIRECT ANYANG ON COURSE. WE NEVER CAME NEAR P 73A AND B AS WE WERE ALWAYS W OF THE ARPT BUT OUR EASTERLY HDG GOT THE CTLR VERY EXCITED. THE REMAINDER OF THE FLT WAS UNEVENTFUL. AS A FOOTNOTE, THIS WAS DAY 2 OF A 5 DAY TRIP. ON THE FIRST DAY WE FLEW FROM EWR-NRT. WE LAID OVER IN NIT FOR APPROX 25 HRS. ON THE SECOND DAY WE WENT NIT- SEL-NRT. WE LEFT NIT AT APPROX XX00 LCL WHICH IS OY00 'BODY' TIME. THIS IS BACK SIDE OF THE CLOCK FLYING. I'VE FLOWN A LOT OF TRIPS LIKE THIS ONE AND THE SECOND DAY ALWAYS SEEMS TO BE THE MOST DIFFICULT.

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.