Narrative:

I thought I handed off aircraft X to dover approach at 6000 ft; but apparently the automation sent it to ZDC. The strip I had was a full route readout; not a regular strip; so I did not see the altitude on the strip. The aircraft's altitude was not amended to 6000 ft by allentown approach and was handed off to me by our north departure sector at 6000 ft leading me to believe he was to be handed off to dover approach. Since the aircraft was still in the system at 8000 ft; the computer recognized it as a handoff to ZDC. I instructed a relieving controller to have aircraft X contact dover approach because I thought they had taken the handoff. Dover was not aware of the aircraft and the pilot did not check in until close to the eno VORTAC. My aircraft got too close to an aircraft worked by dover approach near the eno VORTAC.

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Original NASA ASRS Text

Title: PHL CTLR EXPERIENCED OPERROR WHEN INCORRECT ALT WAS MISSED ON FLT PLAN AND HDOF WAS DIRECTED TO WRONG ADJACENT FACILITY AND OVERLOOKED.

Narrative: I THOUGHT I HANDED OFF ACFT X TO DOVER APCH AT 6000 FT; BUT APPARENTLY THE AUTOMATION SENT IT TO ZDC. THE STRIP I HAD WAS A FULL RTE READOUT; NOT A REGULAR STRIP; SO I DID NOT SEE THE ALT ON THE STRIP. THE ACFT'S ALT WAS NOT AMENDED TO 6000 FT BY ALLENTOWN APCH AND WAS HANDED OFF TO ME BY OUR N DEP SECTOR AT 6000 FT LEADING ME TO BELIEVE HE WAS TO BE HANDED OFF TO DOVER APCH. SINCE THE ACFT WAS STILL IN THE SYS AT 8000 FT; THE COMPUTER RECOGNIZED IT AS A HDOF TO ZDC. I INSTRUCTED A RELIEVING CTLR TO HAVE ACFT X CONTACT DOVER APCH BECAUSE I THOUGHT THEY HAD TAKEN THE HDOF. DOVER WAS NOT AWARE OF THE ACFT AND THE PLT DID NOT CHK IN UNTIL CLOSE TO THE ENO VORTAC. MY ACFT GOT TOO CLOSE TO AN ACFT WORKED BY DOVER APCH NEAR THE ENO VORTAC.

Data retrieved from NASA's ASRS site as of January 2009 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.