Narrative:

On civet 3 noticed aircraft drifting right of localizer at arnes. At suzzi aircraft went into 10 degree bank and saw map shift on screen. Disconnected autoplt and turned left to intercept to localizer. We were 1 DOT right at suzzi. Both vors were tuned to manual 113.6 and 115.7 ILS tuned to 109.9. Cleared for approach at fuelr. Flew rest of approach in expanded ILS with large map shift. This makes for a very crazy approach. After correcting back, completion of approach was on raw data.

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Original NASA ASRS Text

Title: B757 ACFT ON DSCNT AND APCH TO LAX HAD MAP SHIFT. ACFT WENT INTO 10 DEG BANK AT THE SHIFT, FLC DISCONNECTED AUTOPLT AND FLEW REMAINING APCH USING RAW DATA.

Narrative: ON CIVET 3 NOTICED ACFT DRIFTING R OF LOC AT ARNES. AT SUZZI ACFT WENT INTO 10 DEG BANK AND SAW MAP SHIFT ON SCREEN. DISCONNECTED AUTOPLT AND TURNED L TO INTERCEPT TO LOC. WE WERE 1 DOT R AT SUZZI. BOTH VORS WERE TUNED TO MANUAL 113.6 AND 115.7 ILS TUNED TO 109.9. CLRED FOR APCH AT FUELR. FLEW REST OF APCH IN EXPANDED ILS WITH LARGE MAP SHIFT. THIS MAKES FOR A VERY CRAZY APCH. AFTER CORRECTING BACK, COMPLETION OF APCH WAS ON RAW DATA.

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.