As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THRUST MODE ANNUNCIATOR STAYS IN CRZ AFTER LEVEL OFF. PER OUR OPTIONS IT SHOULD STAY IN CLB. SUGGEST CHECKING SOFTWARE LOAD. GROUNDED - YES. VERIFIED SOFTWARE LDDB P/N IS 557362-005 VIA MAINTENANCE LAPTOP ONS. FOUND NO RELATED FAULTS ON CDU. REF B737-9 IFIM 22-31-00-810-803, ALL BITE TESTS PASS. NO FAULTS OBSERVED.