As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT START OF DESCENT IN VNAV SPEED BUG TRANSITIONED TO MACH 0.82 TWICE. ACFT GROUNDED. R & R RT FMC IAW AMM 34-61-02-000-801/34-61-02-400-801. ACCOMPLISHED LOAD OF ALL FMC SOFTWARE IAW AMM 34-61-00/201, FMCS PERFORMANCE FACTORS ADJUSTMENT IAW AMM TASK 34-61-00-800-801, FLIGHT MANAGEMENT COMPUTER SYSTEM OPS TEST IAW AMM 34-61-00-710-801. ALL CHECK GOOD.