As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT CRUISE VNAV DISCONNECT DISPLAYED IN THE FMC SCRATCHPAD AND A/T LIMIT INDICATED ON UPPER DU. ALL VERTICAL PROFILE DATA IN FMC DELETED. GROUNDED - YES. ACCOMPLISHED FIM 22-32 TASK 815. NO CURRENT FAULTS NOTED. ACCOMPLISHED ADIRS BITE PER FIM 34-21 TASK 801. NO CURRENT FAULTS NOTED. ACCOMPLISHED EEC BITE PER FIM 73-00 TASK 801. NO CURRENT FAULTS NOTED.