As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE, DETECTED A BURNING ODOR. SMOKE ENTERED COCKPIT FROM ABOVE. DECLARED AN EMERGENCY. SMELLING A SWEET ODOR AND CREW REPORTED HYDRAULIC FLUID COMING DOWN DOOR, WINDOWS AND SIDE OF ACFT. ACFT KEPT MAKING A SQUEALING NOISE FOLLOWED BY GYRATIONS AND INCREASED PRESSURE ON FLIGHT CONTROLS WITH A HYD 2 LIGHT AND SMOKE. THIS HAPPENED ABOUT THREE TIMES. LANDED WITHOUT INCIDENT. MX FOUND A RUPTURED NR 2 HYD PRESSURE LINE BETWEEN THE HYD PUMP AND THE TANDEM HYD PACK.