Sorry, the NHTSA has not posted this TSB document yet.
You can still get the detailed info from Mitsubishi for this TSB. Call your local Mitsubishi dealer's service department & ask for a copy of TSB# TSB0052A001.
THIS BULLETIN MENTIONS THAT THE FRONT SEATBACKS ON VEHICLES EQUIPPED WITH SRS SIDE AIR BAGS CAN NOW BE DISASSEMBLED AND SERVICE PARTS ARE AVAILABLE FOR REPAIR. *TT