As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REF T/C 78273000 ENG 1 SHOWS LONG TIME FAULT 76-31361 THE START LEVER SIGNALS DISAGREE. GROUNDED - YES. 450 FH LONG TIME FAULT DEFERRED TO PLT PER T/C 78273000. REPLACED #1 START BRAKE ASSY B737-900 AMM 76-11-10-420-801 UP TO STEP (H) ASSY TEST. PERFORMED ENGINE START BRAKE ASSEMBLY TEST IAW AMM 76-11-10-420-801-F00, STEP H. GROUND VERIFICATION TESTS SUCCESSFUL. RAN #1 ENGINE, VERIFIED FAULT 76-31361 WAS NOT PRESENT ON LAST LEG.