What was found
BLEED PRSOV R STATUS MSG. DUE TO FLIGHT CREWS & AHM REPORTING 'BLEED PRSOV R' STATUS MESSAGE WITH CORRELATED MMSG PRSOV REPLACED. PAID PARTICULAR ATTENTION TO CONDITION OF SENSE LINES FOR LOOSENESS OR DAMAGE. FOUND NO DEFECTS OF LOOSE LINES. REPLACED PRSOV CONTROLLER, NO HELP. REPLACED PRSOV, ALSO NO HELP. REPLACED PRSOV BUTTERFLY SHAFT SHEARED. PROBLEM RECURRING. REPLACED NR 2 ENG HPFAC, ACP'D ENG AIR SUPPLY VLV OPS CHECK. OPS GOOD. PRESS CHECKED SUPPLY LINE GOING THRU CAC, NO LEAKS NOTED. PRESS CHECKED SENSE LINE TO HPSOV 45 PSI NO LEAKS, HPSOV OPS SMOOTH.