As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT DUCT PRESSURE BELOW 18 PSI (AT 16PSI) WITH IDLE POWER DURING HIGH STAGE CROSSOVER CHK. ACFT GROUNDED. R & R NR 1 ENG PRSOV AND LEAK AND OPS CHECKED GOOD IAW MM 36-11-04 ACP ENG BLEED AIR CROSSOVER OPS TEST IAW MM 36-11-00 TEST GOOD.