What was found
(CAN) ON MARCH 13, 2014, DURING FLIGHT, ACFT EXPERIENCED A DUCT PRESSURE INDICATION, LT AND RT POINTERS WERE NOT THE SAME, SPLIT. THIS OCCUR WHILE THE ENGINE WAS UTILIZED AS THE BLEED SOURCE. IN CLIMB LT POINTER INDICATED 72 PSI AND R POINTER INDICATED 35 PSI. IN CRUISE THE STABILIZER INDICATED LT 40 PSI AND R 36 PSI. UPON COMPLETING AN INSPECTION, MAINTENANCE DISCOVERED THE PRESSURE LINE ON THE PRSOV WAS BROKEN AND SHEERED OFF ON THE NR 1 ENGINE. THE LINE WAS REPLACED AND FUNCTION CHECKS WERE COMPLETED IAW AMM 36-11-04. AFT WAS THEN RELEASED TO SERVICE.