Narrative:

Center advised our aircraft 3-5 mi north of course. Gave a heading to reintercept. We advised our cockpit indications showed on course and course bar deviating left or right 2 bar widths. After having flight attendant check cabin, it was discovered that a passenger was using a small tape player and was told to turn it off. After it was turned off navigation system and course bar functioned normally. No conflicts occurred.

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Original NASA ASRS Text

Title: ACR MLG TRACK DEV CAUSED BY A PAX USING A TAPE PLAYER ENRTE.

Narrative: CENTER ADVISED OUR ACFT 3-5 MI N OF COURSE. GAVE A HDG TO REINTERCEPT. WE ADVISED OUR COCKPIT INDICATIONS SHOWED ON COURSE AND COURSE BAR DEVIATING L OR R 2 BAR WIDTHS. AFTER HAVING FLT ATTENDANT CHK CABIN, IT WAS DISCOVERED THAT A PAX WAS USING A SMALL TAPE PLAYER AND WAS TOLD TO TURN IT OFF. AFTER IT WAS TURNED OFF NAV SYS AND COURSE BAR FUNCTIONED NORMALLY. NO CONFLICTS OCCURRED.

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.