As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT # 1573, EWR-LAX. IN CRUISE FLIGHT FL340 .78M, MOUNTAIN WAVE +25KTS AIRSPEED INCREASE CAUSED EXCEEDANCE OF VMO BY APPROX 10 KTS FOR APPROX 10 SECONDS. SPEED BRAKES WERE DEPLOYED AND SPEED SLOWED BACK TO NORMAL.; PERFORMED CHAPTER FIVE INSPECTION PER AMM 05-51-17 FOUND EXCEEDANCE OVER 10 KTS PER PILOT REPORT. IN LIMITS PER AMM FIGURE 05-51-1-991-00800-00-A NO FURTHER INSPECTION REQUIRED.