A B737-300 MISALIGNS ON LNDG RWY 4 AT AMA. THE RVR WAS 1800 FT AND THE CAPT THOUGHT THAT THE RWY EDGE LIGHTS WERE THE CTRLINE LIGHTS; WHICH DID NOT EXIST. TIRE CUTS DURING THE RWY EXCURSION.

Narrative

IFR APCH AMA RWY 4; 1800 FT RVR MINIMUM REQUIRED FOR APCH. 1800 FT RVR WAS FINALLY RPTED HAVING HELD OVER OM FOR APPROX 30 MINS. STANDARD IFR BRIEFING WAS GIVEN AND STANDARD COMPANY CALLS WERE MADE. ACFT WAS FLOWN BY FO WITH AUTOPLT ENGAGED. CAPT WAS BACKING UP APCH WITH HGS. APCH WAS STABILIZED APCHING DECISION HT. AT 100 FT ABOVE DECISION HT; FO 'APCHING MINIMUMS.' CAPT 'GOING OUTSIDE.' AT DECISION HT; FO 'MINIMUMS.' CAPT 'LNDG; MY AIRPLANE.' FO 'YOUR AIRPLANE.' I THEN LOOKED OUTSIDE THE ACFT AND SAW RWY LIGHTS AND THE ACFT POSITIONED PROPERLY FOR CONTINUING THE APCH. I LOOKED AT THE RADIO ALTIMETER AND MADE MY NEXT REQUIRED CALL '100 FT.' I THEN LOOKED BACK OUTSIDE AND NOTICED THE ACFT DRIFTING QUICKLY TO THE L. IN MY OPINION AND LATER AGREED TO BY THE CAPT; I BELIEVE THE CAPT MISTAKENLY FOCUSED ON THE L RWY EDGE LIGHTS AND THOUGHT THEM TO BE THE CTRLINE LIGHTS. THERE ARE NO CTRLINE LIGHTS ON THIS RWY. WITHOUT HESITATION AND JUST BELOW 100 FT AGL; I SAID; 'CAPT; THOSE AREN'T CTRLINE LIGHTS!' THE CAPT IMMEDIATELY CORRECTED TO THE R AND WE LANDED FIRMLY ON THE RWY. WE TAXIED TO THE GATE AND INSPECTED THE ACFT BECAUSE OF THE FIRM LNDG. WHEN WE INSPECTED THE MAIN GEAR; WE NOTICED LIGHT MUD AND GRASS IN THE L BRAKE ASSEMBLY. WE THEN CONTACTED OUR COMPANY AND INFORMED THEM OF HAVING POSSIBLY LEFT THE RWY SURFACE. WE HAVE FOUND THAT THE ACFT ACTUALLY LANDED ON THE RWY BUT SLID AND EXITED THE RWY WITH THE #1 TIRE ON THE L MAIN GEAR. RAPIDLY CHANGING WIND CONDITIONS AND VISIBILITY I BELIEVE WERE THE CAUSE OF THIS EVENT. SUPPLEMENTAL INFO FROM ACN 419580: AS I DID NOT TURN ON THE LNDG LIGHTS THE LAST FEW FT ABOVE THE RWY; I COULD NOT JUDGE PRECISELY THE DISTANCE ABOVE THE RWY AND THE LNDG WAS QUITE FIRM. I FOUND A SMALL (3-4 INCH) CUT ON THE #1 TIRE AND A THIN (1/4 INCH) LAYER OF DIRT ON THE UNDERSIDE OF THE WING IN THE WING ROOT AREA. I NOTIFIED DISPATCH AND THE TWR CTLR BY PHONE. I HAD NOT NOTICED THAT THE APCH PLATE STATED THAT AIII MODE WAS REQUIRED FOR THIS CAT I APCH. HAD WE USED THIS; WE WOULD HAVE HAD THE APCH WARNING LIGHT OPERATIONAL AND HAD IT COME ON; A MISSED APCH WOULD HAVE BEEN MANDATORY.