Captain of an MD88 lost 1000 ft during cruise while diverting around a WX cell due to severe turbulence. Captain immediately returned to assigned altitude.

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Attributes
ACN	402425
Time
Date	199805
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : lbb
State Reference	TX
Altitude	msl bound lower : 34000 msl bound upper : 35000
Environment
Flight Conditions	Mixed
Light	Night
Aircraft 1
Controlling Facilities	artcc : dfw
Operator	common carrier : air carrier
Make Model Name	MD-88
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	cruise other cruise other
Route In Use	enroute airway : zfw
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	other other : other pilot : instrument pilot : flight engineer pilot : commercial pilot : atp
Experience	flight time last 90 days : 210 flight time total : 12500 flight time type : 5000
ASRS Report	402425
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	other other : other pilot : flight engineer pilot : instrument pilot : private pilot : commercial
Experience	flight time last 90 days : 200 flight time total : 9000 flight time type : 5000
ASRS Report	402953
Events
Anomaly	altitude deviation : excursion from assigned altitude inflight encounter : weather non adherence : clearance other anomaly
Independent Detector	other flight crewa
Resolutory Action	flight crew : regained aircraft control flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Primary Problem	Weather
Air Traffic Incident	Pilot Deviation

Narrative:

Encountered turbulence at FL350 en route from dfw to phx (possibly short term severe) while turning to avoid radar return. Advised by dispatcher that aircraft was in vicinity of jetstream. Experienced loss of approximately 1000 ft and airspeed variations of 20-30 KTS.

Original NASA ASRS Text

Title: CAPT OF AN MD88 LOST 1000 FT DURING CRUISE WHILE DIVERTING AROUND A WX CELL DUE TO SEVERE TURB. CAPT IMMEDIATELY RETURNED TO ASSIGNED ALT.

Narrative: ENCOUNTERED TURB AT FL350 ENRTE FROM DFW TO PHX (POSSIBLY SHORT TERM SEVERE) WHILE TURNING TO AVOID RADAR RETURN. ADVISED BY DISPATCHER THAT ACFT WAS IN VICINITY OF JETSTREAM. EXPERIENCED LOSS OF APPROX 1000 FT AND AIRSPD VARIATIONS OF 20-30 KTS.

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.