As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT DUCT PRESSURE READS 14-17 PSI DURING CLIMB, AT FL380 READ 18-20 PSI. ACFT GROUNDED. ACCOMPLISHED HEALTH CHECK OF NR 2 ENGINE. REPLACED HIGH STAGE VALVE, PRECOOLER VALVE NO OTHER FAULTS NOTED. ACCOMPLISHED ENGINE RUN AND CROSSOVER TEST. NO OTHER FAULTS NOTED, REF MM 36-11-00 AND TASK CARD NG-36WC-00001.