As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT FL 35 LT ENG EPR, N1 AND N2 STARTED TO ROLL BACK. RT ENG STAYED AT 2.0 EPR. LT WENT DOWN TO 1.1 EPR. F/A HEARD LOUD NOISE OR BANGING FROM ENG. ANTIICE ON IN MO TURBULANCE DURING DESCENT LOST PRESSURIZATION. LT ENG STARTED TO RESPOND AROUND FL 20 AND BY FL 10 ENG AND PRESSURIZATION OK.