A320 flight crew experienced momentary overspd in turbulence air over the sierra nevada mountains.

Attributes
ACN	579822
Time
Date	200304
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : zoa.artcc
State Reference	CA
Altitude	msl single value : 33000
Environment
Weather Elements	Turbulence
Aircraft 1
Controlling Facilities	artcc : zoa.artcc
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 190 flight time total : 10600 flight time type : 600
ASRS Report	579822
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 9500 flight time type : 550
ASRS Report	579827
Events
Anomaly	inflight encounter : turbulence non adherence other
Independent Detector	aircraft equipment other aircraft equipment : air speed indicator
Resolutory Action	flight crew : regained aircraft control
Consequence	other
Supplementary
Problem Areas	Environmental Factor Aircraft Flight Crew Human Performance Weather
Primary Problem	Environmental Factor

Narrative:

In cruise, light turbulence, accelerating fro mach .77 to .79 with autoplt #1 and autothrottle on. Aircraft oversped about 1-2 KTS for about 2 seconds. Made maintenance write-up as required by company operations manual.

Original NASA ASRS Text

Title: A320 FLT CREW EXPERIENCED MOMENTARY OVERSPD IN TURB AIR OVER THE SIERRA NEVADA MOUNTAINS.

Narrative: IN CRUISE, LIGHT TURB, ACCELERATING FRO MACH .77 TO .79 WITH AUTOPLT #1 AND AUTOTHROTTLE ON. ACFT OVERSPED ABOUT 1-2 KTS FOR ABOUT 2 SECONDS. MADE MAINT WRITE-UP AS REQUIRED BY COMPANY OPS MANUAL.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.