ALTDEV ALT OVERSHOT.

Narrative

I RPTED TO DEP FROM TWR CTL THAT WE WERE OUT OF APPROX 2700 FT FOR 4000 FT. AT THAT TIME; THE COPLT SAID SHE FORGOT THAT CLRNC DELIVERY SAID WE WERE TO LEVEL AT 2500 FT ON DEP. SHE THEN STARTED TO DSND AT ABOUT 3100 TO 3200 FT; BUT AT THE SAME TIME; DEP CLRED US TO 4500 FT TO TOP. DEP NEVER QUESTIONED OUR RPTED ALT. IT HAS BEEN STANDARD PROCS TO CLB TO 4000 FT AFTER TKOF. ALSO TFC VOLUME WAS VERY LOW. THERE WAS ONLY 1 DEP IN FRONT OF US AND I DON'T REMEMBER ANYONE BEHIND US ON TKOF. ON REVIEWING THE CHKLIST FOR CLRNC; THE COPLT ONLY SAID SHE GOT A VFR 4500 FT CLRNC (CLB TO 4000 FT IS STANDARD) SHE DID NOT STATE ANYTHING ABOUT 2500 FT CLB. TAXIING OUT ON THE RWY NOTHING HAD BEEN SET IN ALT ALERTER. I THEN DIALED IN 4000 FT WHICH IS STANDARD ALT FOR TURBOPROP. THE COPLT STILL SAID NOTHING ABOUT THE 2500 FT CLB. ALSO TWR ONLY GAVE HDG; NO ALT ON TKOF. FOR PERCEPTION; IT SEEMS THAT PLTS GET USED TO THE STANDARD OMA DEP 3000 FT/ICT 5000 FT/MCI 4000 FT; AND WHEN SOMETHING DIFFERENT IS SAID; IT IS EASY TO MISS. IT WOULD HELP IF THEY WOULD REMIND.