As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BLEED SYS HEALTH CHECK INFO SENT VIA ACARS ON F872 24 MAY 2009 INDICATES RT DUCT PRESS AT 30 PSI THIS IS BELOW OPERATIONAL LIMITS IAW AMM 36 11 00 710 801 FIG 502 GROUNDED YES. PERFORMED PNEUMATIC SYS T/S OF RT ENG REF MM 36 00 00. FOUND PRECOOLER VALVE DEFECTIVE. REMOVED AND REPLACED PRECOOLER VALVE REF MM 36 12 02. ROTIBLE PART VERIFIED BY SEAM C-MIKE. GROUND VERIFIED PRECOOLER VALVE OPERATION IAW MM 36 12 00. SEAM-C NOTIFIED.