An altitude excursion due to turbulence near flagstaff, az.

Attributes
ACN	522140
Time
Date	200108
Day	Mon
Local Time Of Day	0001 To 0600
Place
Locale Reference	navaid : flg.vortac
State Reference	AZ
Altitude	msl bound lower : 33000 msl bound upper : 33400
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	A300
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : flight engineer pilot : cfi pilot : atp
Experience	flight time last 90 days : 115 flight time total : 10000 flight time type : 115
ASRS Report	522140
Events
Anomaly	altitude deviation : excursion from assigned altitude inflight encounter : turbulence
Resolutory Action	flight crew : returned to assigned altitude
Supplementary
Problem Areas	Environmental Factor Weather
Primary Problem	Weather

Narrative:

While en route at night, level at FL330, encountered severe turbulence for approximately 30 seconds and heavy rain. Radar showed no WX in the area, and no visual indications. Gained and lost +/-400 ft. No injuries or aircraft damage noted while en route.

Original NASA ASRS Text

Title: AN ALT EXCURSION DUE TO TURB NEAR FLAGSTAFF, AZ.

Narrative: WHILE ENRTE AT NIGHT, LEVEL AT FL330, ENCOUNTERED SEVERE TURB FOR APPROX 30 SECONDS AND HVY RAIN. RADAR SHOWED NO WX IN THE AREA, AND NO VISUAL INDICATIONS. GAINED AND LOST +/-400 FT. NO INJURIES OR ACFT DAMAGE NOTED WHILE ENRTE.

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.