As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) SECONDARY EXHAUST DUCT CRACKED ALONG THE SEAM ON THE OUTER SIDE FROM ABOUT .2500 THE LENGTH DOWN TO .7500 THE LENGTH, CAUSING SEVERAL SMALLER CRACKS TO FORM ALONG INITIAL CRACK 90 DEGREES FROM THE ORIGINAL BOTH ON THE UPPER AND LOWER SIDES. OTHER OPERATORS REPORTED THAT IT IS NOT UNCOMMON TO HAVE SOME CRACKING. (TC NR 20070516002)