Narrative:

Unintentional navigation error (estimated 10-15 NM while navigating ar-14 from diw NDB to metta intersection). NDB bearings 'wandering' +/- 20 degree from 208 degree bearing. When chs VOR/DME avail for xchk approaching metta error noticed and corrected. After returning to track ar-1 ATC said 'have you back on centerline, change to frequency...'. That was first and only comment from ATC.

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Original NASA ASRS Text

Title: MLG EXPERIENCES DIFFICULTY TRACKING AR14 SOUTHBOUND BETWEEN DIW NDB AND METTA INTERSECTION.

Narrative: UNINTENTIONAL NAV ERROR (ESTIMATED 10-15 NM WHILE NAVIGATING AR-14 FROM DIW NDB TO METTA INTXN). NDB BEARINGS 'WANDERING' +/- 20 DEG FROM 208 DEG BEARING. WHEN CHS VOR/DME AVAIL FOR XCHK APCHING METTA ERROR NOTICED AND CORRECTED. AFTER RETURNING TO TRACK AR-1 ATC SAID 'HAVE YOU BACK ON CENTERLINE, CHANGE TO FREQ...'. THAT WAS FIRST AND ONLY COMMENT FROM ATC.

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