Narrative:

We leveled at FL330 and the #2 thrust lever remained stuck at climb thrust setting. We were unable to physically move it. To prevent exceeding our airspeed limitations, we reduced thrust on the #1 engine. We then declared an emergency and requested ewr as our destination. We shut down the #2 engine and landed single engine at ewr. The captain handled all the checklist and advising of ATC, company and flight attendants while I flew the airplane. Once all the checklists were complete, the captain took over flying of the airplane. Callback conversation with reporter revealed the following information: the first officer stated that the problem of the stuck throttle did not surface until near leveloff at FL330, the aircraft being in a continuous climb on autothrottle. During the taxi in at ewr, the throttle became functional again, moving quite freely. First officer felt that there had been moisture on the cable that froze during their climb to altitude. The maintenance personnel changed the cable. No deicing procedures were mentioned by the first officer. No other company incidents of a parallel nature.

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Original NASA ASRS Text

Title: A B737-300 FLC DIVERTS TO EWR AFTER #2 ENG THROTTLE IS STUCK IN CLB POS. INFLT ENG SHUTDOWN FOR EMER TFC OVER RBV, NJ.

Narrative: WE LEVELED AT FL330 AND THE #2 THRUST LEVER REMAINED STUCK AT CLB THRUST SETTING. WE WERE UNABLE TO PHYSICALLY MOVE IT. TO PREVENT EXCEEDING OUR AIRSPD LIMITATIONS, WE REDUCED THRUST ON THE #1 ENG. WE THEN DECLARED AN EMER AND REQUESTED EWR AS OUR DEST. WE SHUT DOWN THE #2 ENG AND LANDED SINGLE ENG AT EWR. THE CAPT HANDLED ALL THE CHKLIST AND ADVISING OF ATC, COMPANY AND FLT ATTENDANTS WHILE I FLEW THE AIRPLANE. ONCE ALL THE CHKLISTS WERE COMPLETE, THE CAPT TOOK OVER FLYING OF THE AIRPLANE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE FO STATED THAT THE PROB OF THE STUCK THROTTLE DID NOT SURFACE UNTIL NEAR LEVELOFF AT FL330, THE ACFT BEING IN A CONTINUOUS CLB ON AUTOTHROTTLE. DURING THE TAXI IN AT EWR, THE THROTTLE BECAME FUNCTIONAL AGAIN, MOVING QUITE FREELY. FO FELT THAT THERE HAD BEEN MOISTURE ON THE CABLE THAT FROZE DURING THEIR CLB TO ALT. THE MAINT PERSONNEL CHANGED THE CABLE. NO DEICING PROCS WERE MENTIONED BY THE FO. NO OTHER COMPANY INCIDENTS OF A PARALLEL NATURE.

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.