What was found
DFW - FLT 1939 - DURING DESCENT INTO DFW AFTER ENCOUNTERING ICING CONDITIONS AT FL 260, LOST CABIN PRESSURIZATION CONTROL IN AUTO MODE. ACCOMPLISHED ABNORMAL PROCDURES AND REGAINED PRESSURIZATION CONTROL IN MANUAL MODE. CABIN ALTITUDE NEVER EXCEEDED 7000 FEET. AIRCRAFT LANDED DFW WITHOUT INCIDENT. REPLACED CABIN PRESSURIZATION SELECTOR PANEL. BOTH CONTROLLERS GROUND CHECKED NORMAL OPERATION. (M)