As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE HIGH STAGE VALVE LEAKS AT BODY. REMOVED AND REPLACED NR 1 ENG HIGH STAGE VALVE IAW 737NG MM 36 11 06 000 801 STEP B&C AND MM 36 11 06 400 801 STEP E&F, PERFORMED W T W AAR 516368 D D 28DEC08, PERFORMED INSTALL TEST OF VALVE IAW 737NG MM 36 11 06 400 801 G, TEST GOOD COMPONENT VERIFIED ETOPS BY QC.