AN A319 SEAT HAD 1 SEAT TRACK FASTENER THAT COULD NOT BE TIGHTENED. STOPPED BY MAINT CTLR FOR FIX. ITEM DEFERRED BY MAINT CTL MGR PER MEL.

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MAINT SUPVR AT ZZZ1 INFORMED ME A MAINT CTLR WOULD NOT ALLOW AN ACFT TO CONTINUE WITH ITEM DEFERRED THAT MORNING REGARDING: PAX ROW 21 ABC HAVING 4 BOLTS SECURING SEAT WITH 1 OF 4 LOOSE IN TRACK; UNABLE TO TIGHTEN. I CONFERRED WITH CTLR ON WHY MEL REF INOP'ING SEATS; NOT USABLE WOULDN'T BE ALLOWED. WE DISAGREED. I THEN CONFERRED WITH MY QUALITY ASSURANCE PERSON AND OPS ENGINEERING WHO DISAGREED WITH CTLR. THE QUALITY ASSURANCE PERSON WENT TO TELL CTLR HE WAS WRONG AND ACFT COULD CONTINUE. MEANTIME; THE STATION SUPVR AT ZZZ1 CALLED BACK AND I TOLD HIM ALL WOULD BE OK. HE ASKED IF HE COULD PUSH ACFT FROM GATE; I STATED YES. THE QUALITY ASSURANCE AND CTLR THEN WERE STILL DISCUSSING WHEN CTLR STATED HE WOULDN'T ALLOW; AND WHEN DISCUSSION HELD AGAIN WITH CTLR TO WHERE I HEARD HIS CONCERNS; ACFT HAD TAKEN OFF AND WAS FLYING; I THEN MADE ARRANGEMENTS FOR ACFT TO COME ON 2 LEGS TO ZZZ FOR REPAIR AND ASSIGNED ITEM FOR FIX. I ALSO UPDATED DEFERRAL ITEM STATING SEAT SECURITY MUST BE CHKED BEFORE EACH DEP TILL REPAIRED. I FELT MY QUALITY ASSURANCE PERSON AND OWNER OF MEL'S WOULD KNOW IF ACFT ILLEGAL FOR DEFERRAL AND WHEN THEY ADVISED ME; YES; I WENT WITH THEIR EXPERTISE.