As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AN OPERATOR HAD AN INCIDENT WHERE THE RT DITCHING DAM COVER OPENED DURING DESCENT. THE DAM DID NOT INFLATE BUT THE BAG SUFFERED DAMAGE AND THE AFT SECTION OF THE ALUMINUM DAM COVER IS MISSING. NEW ITEMS WERE FITTED AND TESTED. THE ACFT HAS RETURNED TO SERVICE.