Narrative:

Departing msy, flight plan was to fly over vuz on J22 to vxv direct bkw J142 to csn arrival route. First officer flying. Over vuz, first officer mistakenly put bkw instead of vxv. Captain had gad in #1 navigation instead of vuz. Captain's course needle indicated 20 degrees off course. Made a right 30 degree turn to correct. ATC asked if we were off course to the south. We said that we showed that we were north of course. ATC gave us a turn back 30 degrees. Then shortly after, ATC said that we were back on course. Found captain had gad frequency in error and first officer had bkw frequency too soon. Navigating back on course over vuz J22 outbound, captain asked if there were any problems and ATC said that there were no problems at all. ATC just mentioned that there was another aircraft in the area. Both gad and vuz vors are next to each other and can be mistakenly used. Supplemental information from acn 480802

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Original NASA ASRS Text

Title: NAV PROB OVER VULCAN VOR.

Narrative: DEPARTING MSY, FLT PLAN WAS TO FLY OVER VUZ ON J22 TO VXV DIRECT BKW J142 TO CSN ARR RTE. FO FLYING. OVER VUZ, FO MISTAKENLY PUT BKW INSTEAD OF VXV. CAPT HAD GAD IN #1 NAV INSTEAD OF VUZ. CAPT'S COURSE NEEDLE INDICATED 20 DEGS OFF COURSE. MADE A R 30 DEG TURN TO CORRECT. ATC ASKED IF WE WERE OFF COURSE TO THE S. WE SAID THAT WE SHOWED THAT WE WERE N OF COURSE. ATC GAVE US A TURN BACK 30 DEGS. THEN SHORTLY AFTER, ATC SAID THAT WE WERE BACK ON COURSE. FOUND CAPT HAD GAD FREQ IN ERROR AND FO HAD BKW FREQ TOO SOON. NAVIGATING BACK ON COURSE OVER VUZ J22 OUTBOUND, CAPT ASKED IF THERE WERE ANY PROBS AND ATC SAID THAT THERE WERE NO PROBS AT ALL. ATC JUST MENTIONED THAT THERE WAS ANOTHER ACFT IN THE AREA. BOTH GAD AND VUZ VORS ARE NEXT TO EACH OTHER AND CAN BE MISTAKENLY USED. SUPPLEMENTAL INFO FROM ACN 480802

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.