As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DUCT PRESSURE READING LT 25 PSI, RT 44 PSI BOTH FL370 & FL 340. GROUNDED - YES. PERFORMED PNEU SYST. TROUBLESHOOTING REF 36-11-00-700-804. R & R PRECOOLER CONTROL VALVE REF 36-12-02. R & R PRSOV REF 36-11-04. R & R HIGH STAGE REGULATOR REF 36-11-07, LEAK CHECKS NORMAL FOR ALL 3 PARTS. ACCOMPLISHED ENGINE BLEED AIR CROSSOVER OPS TEST REF MM 36-11-00-710-801. OPS CHECKED GOOD.