As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOTTOM STOP, FORWARD BRACKET BROKE INTO 2 PIECES, 2 INCHES FROM PIVOT BOLTS. INSPECTION FOUND SEVERE INTERGRANULAR CORROSION ON THE FORWARD LOWER STEP BRACKET THAT LEAD TO THIS FAILURE. NO OTHER CORROSION WAS FOUND ON THE LOWER DOOR OR STEPS. THIS IS NOT AN AREA PRONE TO TRAPPED WATER.