Narrative:

Medium large transport X left my airspace prior to being xferred to ZNY. As soon as I realized this, I switched medium large transport X to ZNY.

Google
 

Original NASA ASRS Text

Title: TERMINAL RADAR CTLR ALLOWED ACFT TO ENTER ARTCC'S AIRSPACE BEFORE MAKING A RADAR TRANSFER.

Narrative: MLG X LEFT MY AIRSPACE PRIOR TO BEING XFERRED TO ZNY. AS SOON AS I REALIZED THIS, I SWITCHED MLG X TO ZNY.

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.