Narrative:

Departed runway 22L at mdw. Local controller advised us to contact departure. We were unable to contact them as we had the wrong frequency. In standby. Radio found proper frequency, advised departure we were passing 4000' for 6000'. Departure asked what was our assigned altitude, then he asked what code we were squawking. We realized that we were mistakenly flying a clearance from a previous leg. Sometime between the time the clearance was copied and the taxi check was performed the notepaper which is usually displayed on the center pedestal got flipped displaying a previous clearance. We set wrong squawk, wrong departure frequency and wrong initial altitude in altitude alerter. This crew did not catch the problem until after we had busted our 3000' assigned altitude. Human performance considerations are, we were tired. We had been working combinations of long days with minimum rest. If you get tired enough sooner or later you'll do something incredibly stupid, there are limitless opportunities. Supplemental information from acn 137133. Captain got clearance while I went to get WX and release.

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Original NASA ASRS Text

Title: COMMUTER LTT ALT DEV OVERSHOT PLUS WRONG MODE 'C' CODE SET IN TRANSPONDER.

Narrative: DEPARTED RWY 22L AT MDW. LCL CTLR ADVISED US TO CONTACT DEP. WE WERE UNABLE TO CONTACT THEM AS WE HAD THE WRONG FREQ. IN STANDBY. RADIO FOUND PROPER FREQ, ADVISED DEP WE WERE PASSING 4000' FOR 6000'. DEP ASKED WHAT WAS OUR ASSIGNED ALT, THEN HE ASKED WHAT CODE WE WERE SQUAWKING. WE REALIZED THAT WE WERE MISTAKENLY FLYING A CLRNC FROM A PREVIOUS LEG. SOMETIME BTWN THE TIME THE CLRNC WAS COPIED AND THE TAXI CHK WAS PERFORMED THE NOTEPAPER WHICH IS USUALLY DISPLAYED ON THE CENTER PEDESTAL GOT FLIPPED DISPLAYING A PREVIOUS CLRNC. WE SET WRONG SQUAWK, WRONG DEP FREQ AND WRONG INITIAL ALT IN ALT ALERTER. THIS CREW DID NOT CATCH THE PROB UNTIL AFTER WE HAD BUSTED OUR 3000' ASSIGNED ALT. HUMAN PERFORMANCE CONSIDERATIONS ARE, WE WERE TIRED. WE HAD BEEN WORKING COMBINATIONS OF LONG DAYS WITH MINIMUM REST. IF YOU GET TIRED ENOUGH SOONER OR LATER YOU'LL DO SOMETHING INCREDIBLY STUPID, THERE ARE LIMITLESS OPPORTUNITIES. SUPPLEMENTAL INFO FROM ACN 137133. CAPT GOT CLRNC WHILE I WENT TO GET WX AND RELEASE.

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.