Narrative:

For unknown reasons, I was not as mentally sharp or 'ahead of the aircraft' as I normally try to be. I had made a number of simple, easily correctable mistakes during the flight prior to this one. While descending into philadelphia international, I was instructed to proceed via V-210 to bucks intersection after crossing lancaster VOR (lrp). The RNAV was set to permit direct navigation to bucks from lrp (104 degrees at 26 DME). However, instead of placing 104 degree in the RNAV heading indicator, I had placed 140 degrees. After crossing lrp, I navigated by the RNAV/HSI combination. At approximately 14 DME, the philadelphia controller asked if I was proceeding to bucks on V-210. Believing I was, I confirmed that I was proceeding to bucks on 210 (HSI centered). The controller issued a heading change towards bucks. At this point I discovered the RNAV entry mistake and informed the controller. I was directed to proceed direct bucks. No other problems arose. While I was fit to fly, I permitted a state of mental unpreparedness and complacency to prevail. Had I checked and rechked the RNAV settings, this problem would have ben caught prior to crossing lrp.

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Original NASA ASRS Text

Title: PLT OF AN SMA SEL MISSET THE VOR RADIAL AND FLEW THE WRONG COURSE RESULTING IN ATC INTERVENTION.

Narrative: FOR UNKNOWN REASONS, I WAS NOT AS MENTALLY SHARP OR 'AHEAD OF THE ACFT' AS I NORMALLY TRY TO BE. I HAD MADE A NUMBER OF SIMPLE, EASILY CORRECTABLE MISTAKES DURING THE FLT PRIOR TO THIS ONE. WHILE DSNDING INTO PHILADELPHIA INTL, I WAS INSTRUCTED TO PROCEED VIA V-210 TO BUCKS INTXN AFTER XING LANCASTER VOR (LRP). THE RNAV WAS SET TO PERMIT DIRECT NAV TO BUCKS FROM LRP (104 DEGS AT 26 DME). HOWEVER, INSTEAD OF PLACING 104 DEG IN THE RNAV HDG INDICATOR, I HAD PLACED 140 DEGS. AFTER XING LRP, I NAVIGATED BY THE RNAV/HSI COMBINATION. AT APPROX 14 DME, THE PHILADELPHIA CTLR ASKED IF I WAS PROCEEDING TO BUCKS ON V-210. BELIEVING I WAS, I CONFIRMED THAT I WAS PROCEEDING TO BUCKS ON 210 (HSI CTRED). THE CTLR ISSUED A HDG CHANGE TOWARDS BUCKS. AT THIS POINT I DISCOVERED THE RNAV ENTRY MISTAKE AND INFORMED THE CTLR. I WAS DIRECTED TO PROCEED DIRECT BUCKS. NO OTHER PROBS AROSE. WHILE I WAS FIT TO FLY, I PERMITTED A STATE OF MENTAL UNPREPAREDNESS AND COMPLACENCY TO PREVAIL. HAD I CHKED AND RECHKED THE RNAV SETTINGS, THIS PROB WOULD HAVE BEN CAUGHT PRIOR TO XING LRP.

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.