MIDNITE SHIFT LIME LOADER WAS STEPPING FROM THE LOADOUT CONTROL ACCESS PLATFORM ONTO CAR TO PREPARE FOR LOADING. WHEN HE STEPPED DOWN ONTO THE CAR'S WALKWAY, THE SECTION SUDDENLY BROKE AWAY CA USING HIM TO LOOSE HIS BALANCE AND FALL BACK ONTO THE SIDE OF CAR AND ACCESS RAMP SUPPORT CHAIN. HE CONTINUED WORKING HIS REGULAR SHIFT AS SCHEDULED AND FULL DUTY AS OF 8/1/03.