As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUNCTION FAIL - HPC, FOUND NO. 2 ENG HPC BIT 18 CAN'T CHANGE FROM 1 TO 0 WHEN SUPPLY PRESSURE IS 10-18 PSI.(<P>IAW AMM 36-11-08-004-006-007 REV. 129 & AMM 36-11-08-404-014-007 REV. 129. REPLACED NO. 2 ENG HPC WITH SERVICEABLE PARTS. IAW AMM 36-11-08-404-014-007 REV. 129 PERFORM NO. 2 ENG HPC LEAK CHECK AND BITE TEST RESULT NO LEAK FOUND AND CONDITION CHECK NORMAL.</P>)