What was found
DURING DESCENT FROM 250 AT APPROXIMATELY FL 215, HAD CABIN ALTITUDE WARNING. CABIN ALTITUDE WAS APROXIMATELY 11,000 FT. CONDUCTED QRC/QRH PROCEDURES. CABIN STABILIZED DURING DESCENT. PROCEEDED TO NORMAL LANDING. ACFT GROUNDED. PERFORMED CABIN PRESSURE CONTROLLER BITE CHECK NR 2 CONTROLLER SHOWED CODE 030, LOW IN FLOW /HIGH LEAKAGE IAW FIM 21-31-801. INSPECTED AIRFRAME FOR LEAKS, NO ABNORMAL LEAKS FOUND. INSPECTED PNEUMATIC DUCT, PRESSURE BULKHEAD, AND AIR CONDITIONING BAYS, NO DEFECTS FOUND. PERFORMED CABIN PRESSURE LEAK TEST IAW AMM 05-51-01, CHECKED GOOD.