What was found
ENCOUNTERED A DECOMPRESSION AT 28,000'. FOUND HPSOV CONTROL PRESSURE PORT ELBOW & HARD LINE CONNECTION LOOSE & DAMAGED THREADS. REPLACED NR 1 ENG HPSOV CONTROL PRESSURE PORT ELBOW & LINE. WHILE PERFORMING HEALTH CHECK ON NR 1 ENG FOUND HPSOV FAILING PRESSURE TEST. REPLACED NR 1 ENG HPSOV. PRSOV FAILED CONTINUITY CHECK. REPLACED NR 2 ENG PRSOV, PRSOV OK, BUT NO HIGH STAGE AIR. REPLACED NR 2 ENG PRE-COOLER TEMP SENSOR & OVER TEMP SWITCH, NO HELP. REPLACED NR 2 ENG PRSOV-REG, OP CHECKED GOOD. REPLACED LT ENG FAMV & FATS, 2ND ENG RUN BOTH JUST BELOW BLEED SHIFT, LT PRECOOLER TEMP 332 DEG, RT 328, LT 40 PSI, R-39 PSI. BOTH ENG SHIFT NORMAL.