Narrative:

Inbound on full ILS runway 18 to leb. Utilizing autoplt; we fly the ILS until we descended below the overcast layer of 2500 ft. When we were VFR; the localizer course was aligned; but the runway was well west of the course. When we aligned with the runway; we were one full DOT deflection off. The NOTAMS stated that the localizer was unusable .5 mi into the airport and > 30 degrees from course final. In actuality; it was unusable (or at least 4 degrees off center) out to 3 miles. I mentioned the deviation to tower on frequency and made a follow up after landing. I was told it was 'deceiving' as to the alignment. My concern is if the approach is done to minimums; a landing may not be possible. The aircraft equipment worked fine prior to and after the approach at leb.

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Original NASA ASRS Text

Title: C560 FLT CREW EXECUTED ILS RWY 18 TO LEB. AFTER DESCENDING BELOW THE OVERCAST; IT WAS DISCOVERED THAT THE LOC WAS NOT ALIGNED WITH THE RWY.

Narrative: INBOUND ON FULL ILS RWY 18 TO LEB. UTILIZING AUTOPLT; WE FLY THE ILS UNTIL WE DESCENDED BELOW THE OVERCAST LAYER OF 2500 FT. WHEN WE WERE VFR; THE LOC COURSE WAS ALIGNED; BUT THE RWY WAS WELL WEST OF THE COURSE. WHEN WE ALIGNED WITH THE RWY; WE WERE ONE FULL DOT DEFLECTION OFF. THE NOTAMS STATED THAT THE LOCALIZER WAS UNUSABLE .5 MI INTO THE ARPT AND > 30 DEGS FROM COURSE FINAL. IN ACTUALITY; IT WAS UNUSABLE (OR AT LEAST 4 DEGS OFF CENTER) OUT TO 3 MILES. I MENTIONED THE DEVIATION TO TWR ON FREQ AND MADE A FOLLOW UP AFTER LNDG. I WAS TOLD IT WAS 'DECEIVING' AS TO THE ALIGNMENT. MY CONCERN IS IF THE APCH IS DONE TO MINIMUMS; A LANDING MAY NOT BE POSSIBLE. THE ACFT EQUIP WORKED FINE PRIOR TO AND AFTER THE APCH AT LEB.

Data retrieved from NASA's ASRS site as of January 2009 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.