What was found
DURING CLIMB-OUT OF QPG MAX DIFFERENTIAL PRESSURE 7.0 IN HG AND AUDIBLE PRESSURE LEAK AT FS 577, RBL 61, APPROX WL 250. RETURNED TO QPG AND LANDED WITHOUT INCIDENT. FOUND 2 EA MLG VERTICAL BEAM ATTACHMENT BOLTS BROKEN AT FS 576.5, RBL 61,WL 256. ACCOMPLISHED LAC JOB CARD HST5315 MLG VERTICAL BEAM BOLT INSPECTION, NDT INSPECTION OF HOLES, CLEAN OUT AND BOLT REPLACEMENT PER LAC EDG88-2.