What was found
FLT 440, CLE-BOS. DURING AN ENGINE CHANGE AT BOS, WAS REPORTED WITH TWO CRACKS AT THE LT PYLON SUPPORT INBOARD SEAL (PN 190-03266-004) MEASURING 9MM LONG AND OUTBOARD SEAL (190-03266-003) MEASURING 21MM LONG. THERE ARE NO ALLOWABLES IN THE SRM AND CONTACTED INSTRUCTING TO PERFORM A STOP-DRILL TO THE CRACKS, FABRICATE AND INSTALL A TEMPORARY REPAIR DOUBLER. THIS EC E18-647-01 EMBODIES TEMPORARY REPAIR INSTRUCTIONS PER REF /1/ ETD VALID FOR 5000FH. EC E18-647-02 EMBODIES PERMANENT REPAIR INSTRUCTIONS DETAILING SEALS REPLACEMENT WITHIN 5000FH; APPROVED THIS REPAIR PER REF /1/ ETD AND IS CLASSIFIED AS MAJOR.