Narrative:

We were cleared to descend from FL240 to cross providence VOR at 11000', 250 KIAS. As we descended through 10300', we caught the deviation and began climbing back to 11000'. Center called just at that moment to indicate the small transport thing, and asked what our clearance had been. I confirmed that the clearance was 11000', 250 KIAS.

Google
 

Original NASA ASRS Text

Title: FLT CREW OF MLG DESCENDS BELOW CLRNC ALT.

Narrative: WE WERE CLRED TO DSND FROM FL240 TO CROSS PROVIDENCE VOR AT 11000', 250 KIAS. AS WE DSNDED THROUGH 10300', WE CAUGHT THE DEV AND BEGAN CLBING BACK TO 11000'. CENTER CALLED JUST AT THAT MOMENT TO INDICATE THE SMT THING, AND ASKED WHAT OUR CLRNC HAD BEEN. I CONFIRMED THAT THE CLRNC WAS 11000', 250 KIAS.

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.