Narrative:

Aircraft X was 10NM east of ptw climbing out of 7000 ft from 8000 ft. Air carrier Y was sbound descending out of 7500 ft and about 5 mi from aircraft X when I noticed the conflict. I advised both controllers involved of the situation. I was not in contact with either pilot.

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Original NASA ASRS Text

Title: PHL TRACON CTLR RPTS OBSERVING AN OPERROR AT 7000 FT INVOLVING ACR AND GA ACFT.

Narrative: ACFT X WAS 10NM E OF PTW CLBING OUT OF 7000 FT FROM 8000 FT. ACR Y WAS SBOUND DSNDING OUT OF 7500 FT AND ABOUT 5 MI FROM ACFT X WHEN I NOTICED THE CONFLICT. I ADVISED BOTH CTLRS INVOLVED OF THE SIT. I WAS NOT IN CONTACT WITH EITHER PLT.

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.