AN ACR DC9 FLC HAD THE ACFT ROLL OFF TO THE R TWICE DURING THE LNDG FLARE. THE FLC NOTED THIS IN THE MAINT LOG. AFTER THE SAME CHARACTERISTIC WAS NOTED BY 2 OTHER FLCS THE AIRLINE MAINT PERSONNEL DISCOVERED THAT A CONTRACT MAINT FACILITY HAD MISRIGGED A SPOILER CTL CABLE DURING THE LAST MAJOR MAINT CHK. THIS CAUSED THE SPOILERS TO PARTIALLY DEPLOY AT LOW SPDS.

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ACFT ROLLED TO R AT 20 FT AGL. GAR EXECUTED ON RWY 18R; CIRCLE TO LAND RWY 27. AT 10 FT AGL ACFT ROLLED TO R; LANDED; TAXIED TO GATE. WROTE UP IN LOGBOOK. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE CAPT WAS FLYING A DC9-10 AND THE FIRST ROLL TO THE R OCCURRED AT ABOUT 20 FT AGL. HE MANAGED TO ROLL THE ACFT BACK TO WINGS LEVEL AS HE APPLIED PWR AND STARTED A GAR. THE MAX BANK ANGLE WAS ABOUT 15-20 DEGS; HE SAID. ON THE SECOND APCH HE WAS READY FOR THE ROLL AND ABOUT 10 FT ABOVE TOUCHDOWN THE R ROLL BEGAN AND HE COUNTERED IT AS HE CONTINUED TO A TOUCHDOWN. HE WROTE UP THE PHENOMENON IN THE LOGBOOK AND DISCUSSED IT WITH THE LINE MAINT PERSONNEL. APPROX 1 WK LATER; HE RECEIVED A CALL TO ATTEND A DISCUSSION CONCERNING THIS ACFT AT HIS COMPANY'S HEADQUARTERS. HE SAID THAT 2 OTHER FLCS WHO HAD WRITTEN UP THE ACFT WERE THERE ALONG WITH FAA; COMPANY MGMNT AND MAINT PERSONNEL. AT THIS TIME HE WAS ALLEGEDLY TOLD OF THE CAUSE. HE SAID THAT HE WAS UPSET THAT THE COMPANY'S OVERSIGHT OF THE CONTRACT MAINT ACTIVITIES APPEARED TO BE INSUFFICIENT; BUT NOBODY WANTED TO ADDRESS THIS PROB. THE ACFT WAS PROPERLY REPAIRED ACCORDING TO THE RPTR AND HE HAS FLOWN IT SINCE.