What was found
THE CABIN F/A AND NUMEROUS PASSENGERS REPORTED A LOUD NOISE AT THE REAR STAIRWAY. THE CATWALK REMAINED STUCK IN THE UP POSITION-BLOCKING THE EES PATH- FROM THE LAST TIME THE STAIRS HAD BEEN EXTENDED AND WAS JOLTED OUT OF THAT STUCK POSITION DURING TAXI. MX FOUND A LOOSE CAMLOCK WHICH WAS RESTRICTING THE CATWALK FROM RETURNING TO THE "EXIT PATH" POSITION. THE CAMLOCK WAS SECURED AND A FUNCTIONAL CHECK PROVED THE CATWALK FUNCTIONED CORRECTLY.