Narrative:

I took over departure radar. I had 9 aircraft at the time. One of the aircraft experienced an electrical failure, thus causing his automated data tag to drop off the scope. At this time the loss of data went unnoticed by me. And I allowed the aircraft to enter philadelphia's airspace without coordination.

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Original NASA ASRS Text

Title: ACFT UNCOORD PENETRATION OF AIRSPACE BY ABE APCH CTL. OPDEV.

Narrative: I TOOK OVER DEP RADAR. I HAD 9 ACFT AT THE TIME. ONE OF THE ACFT EXPERIENCED AN ELECTRICAL FAILURE, THUS CAUSING HIS AUTOMATED DATA TAG TO DROP OFF THE SCOPE. AT THIS TIME THE LOSS OF DATA WENT UNNOTICED BY ME. AND I ALLOWED THE ACFT TO ENTER PHILADELPHIA'S AIRSPACE WITHOUT COORD.

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.