AN A320 FO RPTS AN ENTIRE ROW OF PAX SEATS WAS LOOSELY SECURED DURING TKOF AND UNTIL FLT LANDED AT THE PLANNED DEST. A DIVERSION WAS CONSIDERED.

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DURING CLBOUT FROM ZZZ1 AFTER CLBING THROUGH FL180; THE FLT ATTENDANTS CALLED AND SAID THEY NEEDED TO COME TO THE COCKPIT AND TALK TO US. SHE CAME UP AND RPTED THAT THE WHOLE SEAT ASSEMBLY; ROW 9; I THINK IT WAS ABC (BUT IT MIGHT BE THE OTHER SIDE); WAS LOOSE AND ONLY BEING HELD ON BY A SCREW OR TWO. ON TKOF; SHE TOLD US; THE PEOPLE IN THOSE SEATS FELT LIKE THEY WERE GOING TO FALL BACK INTO THE ROW BEHIND THEM; IE; ROW 10. THE FLT ATTENDANTS FELT THAT WE SHOULD LAND IMMEDIATELY. SHE LEFT AND THE CAPT AND I DISCUSSED WHAT TO DO. WE LOOKED AT THE WT OF THE ACFT AND WE WERE ABOVE MAX LNDG WT AT ZZZ1 AND ZZZ2; AND PROBABLY ZZZ3 BUT WE WEREN'T SURE ABOUT THAT AS IT WAS 3 HRS AWAY AT THAT TIME. THERE WAS ALSO BAD WX AT OUR PROPOSED LNDG TIME AT ZZZ2 SHOULD WE DECIDE TO GO THERE; ALTHOUGH I DON'T REMEMBER HOW BAD. THE PLANE WAS COMPLETELY FULL. THERE WERE 2 FEDERAL AIR MARSHALS ON THE FLT; AND THE CAPT DECIDED TO CONTACT THE COMPANY AND SEE IF THEY COULD COME UP TO THE COCKPIT AND THEREBY FREE UP 2 SEATS IN THE BACK FOR 2 OF THE PAX IN THAT ROW. THE COMPANY ULTIMATELY APPROVED OF THAT; BUT BY THEN; THE FLT ATTENDANTS HAD FOUND 3 OTHER PAX WHO WERE WILLING TO TRADE SEATS WITH THOSE PEOPLE IN THE AFFECTED ROW; SO WE NEVER HAD THE MARSHALS JOIN US. WE DECIDED TO CONTINUE ON; AND BASED ON OUR LNDG WT; WX; AND ALL THE OTHER CONSIDERATIONS I COULD THINK OF; I AGREED. I THOUGHT THE CAPT MADE THE RIGHT DECISION AND THE BEST DECISION AVAILABLE TO HIM.