Narrative:

A B747 was in my control at ZNY, sector 68 at 10000 ft and given a clearance to climb to FL230. Seconds later, he reports a TCASII alert descending. I told him I show no targets anywhere around him, no primaries or non mode C. Pilot states, after descending, piper aerostar just went overhead, we missed him by 400 ft. About 5 mi later a VFR target appeared sbound. This all occurs in the wake of trevose radar (qdp) being shut down (decommissioned) and gibbsboro radar being turned on. Numerous reports have been filed and complaints made. The situation still exists, targets disappear, or never appear in this area. Callback conversation with reporter revealed the following information: reporter indicated that the qdp radar was returned to service and that they have full coverage again. Reporter alleges the FAA did not treat the conflict as an near midair collision. Reporter indicated a company incident report was filed by the pilot. Reporter alleges the FAA claimed that the problem with targets not being displayed or dropped was not a safety issue. Reporter claims the union became involved with the problem before the radar was returned to service.

Related reports:

Google
 

Original NASA ASRS Text

Title: RPT OF AN ACR B747 TAKING EVASIVE ACTION TO AVOID A SBOUND PA60 AFTER RECEIVING A TCASII RA. RPTR SAW NO TFC ON THE DISPLAY UNTIL A VFR TARGET APPEARED 5 MI BEHIND THE B747. RPTR ALLEGES THERE IS A PROB WITH TARGETS BEING DISPLAYED ON THE NEW RADAR SYS.

Narrative: A B747 WAS IN MY CTL AT ZNY, SECTOR 68 AT 10000 FT AND GIVEN A CLRNC TO CLB TO FL230. SECONDS LATER, HE RPTS A TCASII ALERT DSNDING. I TOLD HIM I SHOW NO TARGETS ANYWHERE AROUND HIM, NO PRIMARIES OR NON MODE C. PLT STATES, AFTER DSNDING, PIPER AEROSTAR JUST WENT OVERHEAD, WE MISSED HIM BY 400 FT. ABOUT 5 MI LATER A VFR TARGET APPEARED SBOUND. THIS ALL OCCURS IN THE WAKE OF TREVOSE RADAR (QDP) BEING SHUT DOWN (DECOMMISSIONED) AND GIBBSBORO RADAR BEING TURNED ON. NUMEROUS RPTS HAVE BEEN FILED AND COMPLAINTS MADE. THE SIT STILL EXISTS, TARGETS DISAPPEAR, OR NEVER APPEAR IN THIS AREA. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR INDICATED THAT THE QDP RADAR WAS RETURNED TO SVC AND THAT THEY HAVE FULL COVERAGE AGAIN. RPTR ALLEGES THE FAA DID NOT TREAT THE CONFLICT AS AN NMAC. RPTR INDICATED A COMPANY INCIDENT RPT WAS FILED BY THE PLT. RPTR ALLEGES THE FAA CLAIMED THAT THE PROB WITH TARGETS NOT BEING DISPLAYED OR DROPPED WAS NOT A SAFETY ISSUE. RPTR CLAIMS THE UNION BECAME INVOLVED WITH THE PROB BEFORE THE RADAR WAS RETURNED TO SVC.

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.