As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A MAINTENANCE VISIT, DELETED PART DRAIN MAST (P/N 5756067). DRAIN MAST NO LONGER REQUIRED AFT LWR FUSELAGE AT STA 1726.656. REMOVED DRAIN MAST AND INSTALLED BLANK-OFF PLATE TO COVER REMAINING HOLES IAW FAA DER APPROVED ENGINEERING SKETCH REO-03774.