Air carrier did not fly assigned heading account WX, encountered turbulence, deviated from assigned altitude and maximum speed below 10000 ft. Controller noticed and reassigned new altitude.

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Attributes
ACN	441120
Time
Date	199906
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	msl bound lower : 5000 msl bound upper : 5400
Environment
Weather Elements	Turbulence
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : c90.tracon
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial
Route In Use	departure : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : multi engine pilot : commercial
ASRS Report	441120
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude inflight encounter : turbulence inflight encounter : weather non adherence : clearance other anomaly other spatial deviation
Independent Detector	other controllera other flight crewb
Resolutory Action	controller : issued new clearance flight crew : returned to intended or assigned course flight crew : returned to assigned altitude
Supplementary
Problem Areas	Weather Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

Location: after takeoff from runway 32L heading approximately 090 degrees on vector, captain (acting as PF) was leveling at 5000 ft and was given a turn to 120 degrees from 090 degrees. To avoid a cumulus cloud, captain elected to continue on 090 degrees, but updraft from abeam the cloud induced a rapid climb to 5400 ft. Corrective action to return to 5000 ft induced additional speed to greater than 250 KTS. Ord departure recognized altitude difference and issued a climb to 6000 ft. We were then clear of the WX and proceeded en route to pvd. Autoplt was not engaged at any time during this evolution in anticipation of a possible need to exercise emergency authority/authorized should the immediate control of the airport be required. Fortunately, a small delay in the turn to the new assigned heading and disengagement of the autothrottles precluded a greater altitude and speed excursion.

Original NASA ASRS Text

Title: ACR DID NOT FLY ASSIGNED HDG ACCOUNT WX, ENCOUNTERED TURB, DEVIATED FROM ASSIGNED ALT AND MAX SPD BELOW 10000 FT. CTLR NOTICED AND REASSIGNED NEW ALT.

Narrative: LOCATION: AFTER TKOF FROM RWY 32L HDG APPROX 090 DEGS ON VECTOR, CAPT (ACTING AS PF) WAS LEVELING AT 5000 FT AND WAS GIVEN A TURN TO 120 DEGS FROM 090 DEGS. TO AVOID A CUMULUS CLOUD, CAPT ELECTED TO CONTINUE ON 090 DEGS, BUT UPDRAFT FROM ABEAM THE CLOUD INDUCED A RAPID CLB TO 5400 FT. CORRECTIVE ACTION TO RETURN TO 5000 FT INDUCED ADDITIONAL SPD TO GREATER THAN 250 KTS. ORD DEP RECOGNIZED ALT DIFFERENCE AND ISSUED A CLB TO 6000 FT. WE WERE THEN CLR OF THE WX AND PROCEEDED ENRTE TO PVD. AUTOPLT WAS NOT ENGAGED AT ANY TIME DURING THIS EVOLUTION IN ANTICIPATION OF A POSSIBLE NEED TO EXERCISE EMER AUTH SHOULD THE IMMEDIATE CTL OF THE ARPT BE REQUIRED. FORTUNATELY, A SMALL DELAY IN THE TURN TO THE NEW ASSIGNED HDG AND DISENGAGEMENT OF THE AUTOTHROTTLES PRECLUDED A GREATER ALT AND SPD EXCURSION.

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.