Narrative:

IFR oceano (L52) to fullerton (ful). I was on victor 186 and was to turn right on V-394 at adamm intersection. This was the third route cleared. I filed to turn at pirro intersection direct ful and received that clearance. In mogo approach airspace, I was given a new route of V-186 to V-459 turning at darts intersection to sli, then later changed again to V-186 to V-394. I set each of these rtes into the RNAV changing as I received new clrncs. The distance from vny 113.1 to adamm intersection is, on the low altitude chart broken into 5 sections of 12 mi, 5 mi, 5 mi, 11 mi, and 3 mi. I missed the last 3 mi section (chart very crowded with numbers, etc, in that area). I turned right 3 mi short of V-394, turning to a heading of 187 degrees. About 2 mins later, ATC asked for a 90 degree turn to left and strongly reprimanded me on the error. I should have had V-394 dialed into my #2 VOR but had been preoccupied with attempting to enter it into the new GPS.

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Original NASA ASRS Text

Title: PVT INSTRUMENT RATED PLT OF AN SMA SEL FAILED TO FOLLOW ASSIGNED CLRNC, MAKING AN ERROR IN SETTING THE RNAV DISTANCE INFO.

Narrative: IFR OCEANO (L52) TO FULLERTON (FUL). I WAS ON VICTOR 186 AND WAS TO TURN R ON V-394 AT ADAMM INTXN. THIS WAS THE THIRD RTE CLRED. I FILED TO TURN AT PIRRO INTXN DIRECT FUL AND RECEIVED THAT CLRNC. IN MOGO APCH AIRSPACE, I WAS GIVEN A NEW RTE OF V-186 TO V-459 TURNING AT DARTS INTXN TO SLI, THEN LATER CHANGED AGAIN TO V-186 TO V-394. I SET EACH OF THESE RTES INTO THE RNAV CHANGING AS I RECEIVED NEW CLRNCS. THE DISTANCE FROM VNY 113.1 TO ADAMM INTXN IS, ON THE LOW ALT CHART BROKEN INTO 5 SECTIONS OF 12 MI, 5 MI, 5 MI, 11 MI, AND 3 MI. I MISSED THE LAST 3 MI SECTION (CHART VERY CROWDED WITH NUMBERS, ETC, IN THAT AREA). I TURNED R 3 MI SHORT OF V-394, TURNING TO A HDG OF 187 DEGS. ABOUT 2 MINS LATER, ATC ASKED FOR A 90 DEG TURN TO L AND STRONGLY REPRIMANDED ME ON THE ERROR. I SHOULD HAVE HAD V-394 DIALED INTO MY #2 VOR BUT HAD BEEN PREOCCUPIED WITH ATTEMPTING TO ENTER IT INTO THE NEW GPS.

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.