What was found
AIRCRAFT 602CZ WAS AOG IN SJC DUE TO THE DISCOVERY OF CRACKS ON THE LH ENGINE PYLON AFT FAIRING #5 HEAT SHIELD (REF ETD2018-170-093210A, FIGURES 1-3). COMPASS AIRLINES REQUESTED AND RECEIVED RELIEF IN THE FORM OF ETD2018-170-093210 WHICH PROVIDES A 750FC FLY-BY PROVIDED THE FOLLOWING IS ACCOMPLISHED: ACCOMPLISH A DET INSPECTION FOR ANY ADDITIONAL DAMAGE, STOP DRILL THE CRACK DAMAGE, ACCOMPLISH AN NDT HFEC INSPECTION OF THE REPAIR WITHIN 50FC TO CONFIRM CRACK REMOVAL, ACCOMPLISH A DET INSPECTION EVERY 50FC, AND ACCOMPLISH THE PERMANENT REPAIR WITHIN THE 750FC FLY-BY. DURING ONE OF THE REPEAT DET INSPECTIONS A 3RD CRACK (REF ETD2018-170-093210A, FIGURES 4-5) WAS FOUND WHICH TERMINATES AT A RIVET. COMPASS AIRLINES REPORTED THE ADDITIONAL DAMAGE AND RECEIVED RELIEF IN THE FORM OF ETD2018-170-093210A WHICH ALLOWS THE 750FC FLY-BY TO CONTINUE FROM SEPTEMBER 2ND,2018 WITH THE ADDITIONAL DAMAGE. COMPASS ENGINEERING HAS CLASSIFIED THIS REPAIR AS A MINOR REPAIR. WORK ORDER 2522768