Emb 190 flight crew encounters severe turbulence while at cruise altitude.

Attributes
ACN	715853
Time
Date	200611
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : zfw.artcc
State Reference	TX
Altitude	msl single value : 35000
Environment
Flight Conditions	IMC
Weather Elements	Turbulence
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zfw.artcc
Make Model Name	EMB ERJ 190/195 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : atp pilot : commercial
Experience	flight time last 90 days : 40 flight time total : 5700 flight time type : 40
ASRS Report	715853
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	altitude deviation : excursion from assigned altitude inflight encounter : turbulence other anomaly
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : exited adverse environment flight crew : returned to assigned altitude flight crew : regained aircraft control
Supplementary
Problem Areas	Flight Crew Human Performance Environmental Factor Aircraft Weather
Primary Problem	Environmental Factor

Narrative:

At FL350; 50 NM west of fxc; we encountered severe turbulence. The aircraft started to over-speed. I manually reduced the throttles to idle. The aircraft continued to accelerate. I turned off the autoplt to gain better control of the aircraft. We had lost approximately 800 ft. I turned off the autothrottles also to gain better control of the aircraft. I regained control and recaptured our assigned altitude of FL350. The autoplt and autothrottles were re-engaged. No injuries or damage was discovered or reported. The WX radar was of little use to us. No WX was being painted by the WX radar. The captain reported before the flight he learned of some possible tornados in the vicinity from watching the WX channel. The station in aus had no graphical WX information for us to use.

Original NASA ASRS Text

Title: EMB 190 FLT CREW ENCOUNTERS SEVERE TURB WHILE AT CRUISE ALT.

Narrative: AT FL350; 50 NM W OF FXC; WE ENCOUNTERED SEVERE TURB. THE ACFT STARTED TO OVER-SPEED. I MANUALLY REDUCED THE THROTTLES TO IDLE. THE ACFT CONTINUED TO ACCELERATE. I TURNED OFF THE AUTOPLT TO GAIN BETTER CTL OF THE ACFT. WE HAD LOST APPROX 800 FT. I TURNED OFF THE AUTOTHROTTLES ALSO TO GAIN BETTER CTL OF THE ACFT. I REGAINED CTL AND RECAPTURED OUR ASSIGNED ALT OF FL350. THE AUTOPLT AND AUTOTHROTTLES WERE RE-ENGAGED. NO INJURIES OR DAMAGE WAS DISCOVERED OR RPTED. THE WX RADAR WAS OF LITTLE USE TO US. NO WX WAS BEING PAINTED BY THE WX RADAR. THE CAPT RPTED BEFORE THE FLT HE LEARNED OF SOME POSSIBLE TORNADOS IN THE VICINITY FROM WATCHING THE WX CHANNEL. THE STATION IN AUS HAD NO GRAPHICAL WX INFO FOR US TO USE.

Data retrieved from NASA's ASRS site as of January 2009 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.