As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 0687 -ATB / PRES- DUE TO DUAL BLEED FAILURE. CORRECTIVE ACTION: T/S R/R RT ENGINE SPEED CARD AND R/R PMA STATOR. T/S LT ENGINE REPLACED H/P VALVE, FOUND LEAKS ON PRSOV SENSE LINES HPSOV CONTROLLER SENSE LINE AND PRECOOLER, CORRECTED ALL. R/R LT ENGINE FAN AIR VALVE AND 380 TEMP SWITCH. C/W SINGLE PACK CONFIDENCE CK, OPS CK GOOD.