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Jfk local controller issues traffic alert to B757 departure regarding unknown descending traffic resulting in near midair collision.
| Attributes | |
| ACN | 596876 |
| Time | |
| Date | 200310 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : cri.vor |
| State Reference | NY |
| Altitude | msl single value : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : jfk.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure sid : n/s |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : jfk.tower |
| Operator | general aviation : personal |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : developmental |
| Experience | controller limited radar : 7 controller non radar : 13 |
| ASRS Report | 596876 |
| Person 2 | |
| Function | controller : local |
| Events | |
| Anomaly | conflict : airborne critical conflict : nmac non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued alert controller : issued new clearance flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 0 vertical : 0 |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error Inter Facility Coordination Failure Intra Facility Coordination Failure |
Narrative:
I cleared B757 of runway 31L, SID left turn carnarsie climb to 5000 ft. I was told by local #2 to stop the B757 at 3000 ft. As I looked up at the BRITE radar, I noticed a VFR target approaching cri from the west at 3700 ft climbing. I had assumed the 3000 ft altitude on the B757 would suffice the situation. I also issued traffic to the B757. The VFR target went from 3700-3800-4000 ft, then descended rapidly to 3000 ft. I issued an immediate traffic alert to the B757 again pointing out traffic. He replied he did not have the traffic in sight. I suggested a turn to the right. The B757 then reported traffic in sight as the targets merged. He reported it was a cessna.
Original NASA ASRS Text
Title: JFK LCL CTLR ISSUES TFC ALERT TO B757 DEP REGARDING UNKNOWN DSNDING TFC RESULTING IN NMAC.
Narrative: I CLRED B757 OF RWY 31L, SID L TURN CARNARSIE CLB TO 5000 FT. I WAS TOLD BY LCL #2 TO STOP THE B757 AT 3000 FT. AS I LOOKED UP AT THE BRITE RADAR, I NOTICED A VFR TARGET APCHING CRI FROM THE W AT 3700 FT CLBING. I HAD ASSUMED THE 3000 FT ALT ON THE B757 WOULD SUFFICE THE SIT. I ALSO ISSUED TFC TO THE B757. THE VFR TARGET WENT FROM 3700-3800-4000 FT, THEN DSNDED RAPIDLY TO 3000 FT. I ISSUED AN IMMEDIATE TFC ALERT TO THE B757 AGAIN POINTING OUT TFC. HE REPLIED HE DID NOT HAVE THE TFC IN SIGHT. I SUGGESTED A TURN TO THE R. THE B757 THEN RPTED TFC IN SIGHT AS THE TARGETS MERGED. HE RPTED IT WAS A CESSNA.
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.