As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L ENG HPSOV APPEARED SHORTLY AFTER T/O FOR A FEW SECONDS THEN DISSAPPEARED FOR REMAINDER OF FLIGHT. L ENG HPSOV REMAINS ON STATUS PAGE. CONFIRMED FAULT AND DEFERRED PER MEL 36-11-2-2. C/W DMP PER DMP 36-11-2-2 AND INSTALLED PLACARD AS REQUIRED.REPLACED WITH NEW HPC IAW MM 36-11-08/4011RC IAW AMM 36-11-08 ACCOMPLISHED LEAK TEST OF HPC & DMP 36-11-2-2 REVERSED HIGH PRESSURE SHUTOFF VALUE SYS. OPS CK GOOD IAW AMM 36-11-07. 36-11-08-08.