What was found
DURING HEAVY CHECK, RT HORIZONTAL STAB LEADING EDGE RIB CRACKED AT UPPER FLANGE. MX REPAIRED RIB 4 IAW ETD 2013-170-051888, SEE CONTINUATION CARD VP 036178-2013/0293 C1 FOR WORK PERFORMED. THIS REPAIR REPAIR DOES NOT REPRESENT A AIRWORTHINESS LIMITATION AND THE INSPECTION IN THE CURRENT MPG/MRBR IS SUFFICIENT.