AIRFRAME OVERSPD EXPERIENCED BY AN A320 FLT CREW CLBING THROUGH FL360 WHEN CHANGING ALT ENRTE S OF OMA; NE.

Narrative

JUST S OF OMAHA; WE WERE IN CONTINUOUS LIGHT CHOP AT FL350. WE OBSERVED THAT WE WERE JUST SKIMMING THE CLOUD TOPS AND REQUESTED RIDE RPTS FROM CTR. HE RESPONDED THAT FL390 WAS RPTED AS A BETTER RIDE. WE REQUESTED AND RECEIVED FL370 TO TRY THE RIDE THERE. CLBING UP THROUGH THE CLOUD TOPS; WE EXPERIENCED A RAPIDLY DECREASING TAILWIND AND RESULTANT INCREASE IN AIRSPD. THE AUTOPLT/AUTOFLT HAD BEEN IN THE CLB OPEN CLB; MACH .80 SELECTED SPD AND FAILED TO MAINTAIN THAT TARGET CLB SPD. I OBSERVED THAT OUR MACH SPD WAS .81 AND INCREASING AND COMMENTED TO THE FO; WHO WAS PF; THAT HE SHOULD HAND FLY THE ACFT. WE EXCEEDED VMO REDLINE BY ABOUT 2 KTS FOR ABOUT 2 SECONDS. THE CONTINUOUS REPETITIVE CHIME SOUNDED ONLY BRIEFLY. WE RECOVERED OUR TARGET SPD AND REQUESTED FL390 AS FL370 HAD CONTINUOUS LIGHT TURB. RIDE SMOOTHED OUT AT FL390. WE INFORMED MAINT COORDINATOR OF OVERSPD AND PROCEEDED TO SFO WITHOUT FURTHER INCIDENT. HUMAN FACTORS: I SHOULD HAVE MORE CLOSELY MONITORED AIRSPD DURING THE CLB. WE WERE EXITING THE CLOUD TOPS AND NEAR THE TROPOPAUSE. THE AIRBUS FLIES VERY GENTLY IN AUTOFLT AND DOES NOT SWIFTLY CORRECT FOR AIRSPD DEVS. WITHOUT PROPER MONITORING; AND AGGRESSIVE MANUAL INTERVENTION WHEN NECESSARY; THE BUS WILL FLY RIGHT THROUGH VMO/MMO.