As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) NACELLE OB WEB TO SPAR ATTACHMENT CHANNEL CRACKED IN BEND RADIUS ON LOWER END OF CHANNEL. THIS CONDITION EXISTED IN THE SAME AREA ON BOTH NACELLES. CRACKS ARE COMMON IN THESE AREAS ON HIGH CYCLE AIRPLANES. LATER SN AIRCRAFT COME FROM THE FACTORY WITH DOUBLERS ALREADY INSTALLED IN THESE AREAS.