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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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ARTCC radar controller climbing an air carrier DH8 en route to cyn, air carrier received and reacted to a TCASII RA and was in close proximity to a C210 that was VFR. Phl approach was in contact with the C210, but reporter alleges that the C210 did not paint on his scope due to a new radar site that covers that area.
| Attributes | |
| ACN | 382542 |
| Time | |
| Date | 199710 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : cyn |
| State Reference | NJ |
| Altitude | msl bound lower : 8000 msl bound upper : 8500 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Dash 8 Series Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other enroute airway : zny |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Cessna 210 Centurion / Turbo Centurion 210C, 210D |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller non radar : 15 controller radar : 12 |
| ASRS Report | 382542 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 1500 vertical : 500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
| Situations | |
| Navigational Aid | Unspecified |
Narrative:
Working air carrier X, DHC8, departed phl routed via V312 cyn BOUNO3 hpn, checks in out of 6400 ft climbing to 9000 ft. New radar site recently commissioned qie (gibbsboro) located 6 NM north of V312 at albek. Radar data on air carrier X was unreliable during handoff from phl approach, but seemed normal after handoff accepted. Unknown to the controller workforce, radar data on untracked (intruder) targets very unreliable. As air carrier X approached albek I climbed him to 11000 ft. He advised that he had a traffic alert. There was no other targets near him. He then advised that he had a TCASII RA and was descending. 30 seconds later he advised clear of traffic and resuming climb. He saw the traffic at the last moment. Phl approach yelled over the handoff line that they were working the C210, small aircraft Y, and that he had the DHC8 in sight, but all the TCASII actions had already occurred. The poor performance and location of this new radar site is causing a safety hazard. This site replaces qdp (trevose, PA). I don't know why they are decommissioning qdp. After air carrier X reported clear of traffic, the C210 appeared on my scope, sbound at 8500 ft.
Original NASA ASRS Text
Title: ARTCC RADAR CTLR CLBING AN ACR DH8 ENRTE TO CYN, ACR RECEIVED AND REACTED TO A TCASII RA AND WAS IN CLOSE PROX TO A C210 THAT WAS VFR. PHL APCH WAS IN CONTACT WITH THE C210, BUT RPTR ALLEGES THAT THE C210 DID NOT PAINT ON HIS SCOPE DUE TO A NEW RADAR SITE THAT COVERS THAT AREA.
Narrative: WORKING ACR X, DHC8, DEPARTED PHL ROUTED VIA V312 CYN BOUNO3 HPN, CHKS IN OUT OF 6400 FT CLBING TO 9000 FT. NEW RADAR SITE RECENTLY COMMISSIONED QIE (GIBBSBORO) LOCATED 6 NM N OF V312 AT ALBEK. RADAR DATA ON ACR X WAS UNRELIABLE DURING HDOF FROM PHL APCH, BUT SEEMED NORMAL AFTER HDOF ACCEPTED. UNKNOWN TO THE CTLR WORKFORCE, RADAR DATA ON UNTRACKED (INTRUDER) TARGETS VERY UNRELIABLE. AS ACR X APCHED ALBEK I CLBED HIM TO 11000 FT. HE ADVISED THAT HE HAD A TFC ALERT. THERE WAS NO OTHER TARGETS NEAR HIM. HE THEN ADVISED THAT HE HAD A TCASII RA AND WAS DSNDING. 30 SECONDS LATER HE ADVISED CLR OF TFC AND RESUMING CLB. HE SAW THE TFC AT THE LAST MOMENT. PHL APCH YELLED OVER THE HDOF LINE THAT THEY WERE WORKING THE C210, SMA Y, AND THAT HE HAD THE DHC8 IN SIGHT, BUT ALL THE TCASII ACTIONS HAD ALREADY OCCURRED. THE POOR PERFORMANCE AND LOCATION OF THIS NEW RADAR SITE IS CAUSING A SAFETY HAZARD. THIS SITE REPLACES QDP (TREVOSE, PA). I DON'T KNOW WHY THEY ARE DECOMMISSIONING QDP. AFTER ACR X RPTED CLR OF TFC, THE C210 APPEARED ON MY SCOPE, SBOUND AT 8500 FT.
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.