Narrative:

While inbound to lga on the minks arrival ZDC told us to turn to 360 degrees to reintercept the 233 degree radial off dupont and that we were 'well east of course.' both myself and the first officer had us on centerline just before his call. At the time of his call we indeed showed approximately 5 degrees CDI deflection. However, the CDI was very erratic as we were getting poor guidance from dupont. We recentered surprisingly fast after the turn to intercept confirming in my mind the erratic signals from the VOR. In the future, when we start getting erratic course guidance from vors, which is often the case on the east coast, I will ask center/approach for course vectors.

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Original NASA ASRS Text

Title: AN ACR MD80 FLC RPTS THAT THEIR COURSE DEV INDICATOR STARTED TO SHOW AN ERRATIC COURSE INDICATION WHILE TRACKING DQO VOR. THE ARTCC CTLR RPTED THEM OFF COURSE AND VECTORED THEM TO THE CORRECT COURSE.

Narrative: WHILE INBOUND TO LGA ON THE MINKS ARR ZDC TOLD US TO TURN TO 360 DEGS TO REINTERCEPT THE 233 DEG RADIAL OFF DUPONT AND THAT WE WERE 'WELL E OF COURSE.' BOTH MYSELF AND THE FO HAD US ON CTRLINE JUST BEFORE HIS CALL. AT THE TIME OF HIS CALL WE INDEED SHOWED APPROX 5 DEGS CDI DEFLECTION. HOWEVER, THE CDI WAS VERY ERRATIC AS WE WERE GETTING POOR GUIDANCE FROM DUPONT. WE RECENTERED SURPRISINGLY FAST AFTER THE TURN TO INTERCEPT CONFIRMING IN MY MIND THE ERRATIC SIGNALS FROM THE VOR. IN THE FUTURE, WHEN WE START GETTING ERRATIC COURSE GUIDANCE FROM VORS, WHICH IS OFTEN THE CASE ON THE EAST COAST, I WILL ASK CTR/APCH FOR COURSE VECTORS.

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.