Cpr small transport experienced frozen controls while attempting to level off.

Attributes
ACN	80877
Time
Date	198801
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : ord
State Reference	IL
Altitude	msl bound lower : 16000 msl bound upper : 16700
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zau
Operator	general aviation : corporate
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	climbout : intermediate altitude cruise other
Route In Use	departure other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 10000
ASRS Report	80877
Person 2
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical altitude deviation : overshoot inflight encounter : weather
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	other

Narrative:

After takeoff from chicago ord, the chicago center cleared us to 16000' our cruise altitude. The climbout was in wet heavy snow (slush) at 16000', we were unable to level off because the controls had frozen. The aircraft climbed to 16700' of altitude before we could free the controls.

Original NASA ASRS Text

Title: CPR SMT EXPERIENCED FROZEN CONTROLS WHILE ATTEMPTING TO LEVEL OFF.

Narrative: AFTER TKOF FROM CHICAGO ORD, THE CHICAGO CTR CLRED US TO 16000' OUR CRUISE ALT. THE CLIMBOUT WAS IN WET HEAVY SNOW (SLUSH) AT 16000', WE WERE UNABLE TO LEVEL OFF BECAUSE THE CONTROLS HAD FROZEN. THE ACFT CLIMBED TO 16700' OF ALT BEFORE WE COULD FREE THE CONTROLS.

Data retrieved from NASA's ASRS site as of August 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.