Narrative:

Copilot was talking, altitude alerter did not go off. Realized passed through altitude. Stopped climb and returned to assigned altitude. Less talk and more paying attention.

Google
 

Original NASA ASRS Text

Title: A LEAR 35 PIC CLBS 500 FT ABOVE HIS ASSIGNED ALT 50 MI N OF PNS, FL.

Narrative: COPLT WAS TALKING, ALT ALERTER DID NOT GO OFF. REALIZED PASSED THROUGH ALT. STOPPED CLB AND RETURNED TO ASSIGNED ALT. LESS TALK AND MORE PAYING ATTN.

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.