What was found
MAINTENANCE DISCOVERED THAT THE TAILCONE CATWALK OVER THE VENTRAL STAIRWAY HAD GOTTEN STUCK HALF WAY THROUGH TRANSITION WHEN LOWERING THE STAIRS. CAUSE OF BINDING WAS BROKEN CHANNEL EXTRUSION ON THE STAIR AREA SIDEWALL. THIS IS CONSIDERED A DEFECT IN THE EMERGENCY ESCAPE SYSTEM AND COULD HAVE AN ADVERSE AFFECT ON THE EVACUATION ROUTE. THE CATWALK WAS REPAIRED BY REPLACING THE FILLER ASSEMBLY IAW AMM 57-30 AND RIGGED TO MEET PUBLISHED SPECIFICATIONS.