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ATCT TRACON ATCT intrafac coordination small transport X had less than standard separation from Y. System error. Near midair collision.
| Attributes | |
| ACN | 258844 |
| Time | |
| Date | 199312 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : ewr |
| State Reference | NJ |
| Altitude | msl bound lower : 1400 msl bound upper : 1400 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90 tower : ewr tower : jfk tower : fat |
| Operator | general aviation : personal |
| Make Model Name | Small Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | VFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : radar |
| Experience | controller radar : 9 |
| ASRS Report | 258844 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : nmac non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 500 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error Intra Facility Coordination Failure |
Narrative:
Small transport X departed runway 31L on course, heading 280 and transferred to my frequency 125.25. I attempted to obtain clearance for higher altitude with N90 but was unable. I cleared the aircraft out of class B airspace about 12 mi west jfk and advised that radar services were terminated, resume own navigation. Then N90 advised he should contact an N90 frequency. I advised the pilot. Very quickly he came back to me. Advised I could do no more and again advised resume own navigation, frequency change approved. I observed the aircraft continue on its heading, approaching ewr airport. I advised ewr tower by pointout. I then observed an aircraft on final descending out of 2000 on converging course with small transport X. Immediately after, targets merged, I observed ewr traffic Y (air carrier) climbing above 2000 (mode C). When the targets merged, the altitudes were the same.
Original NASA ASRS Text
Title: ATCT TRACON ATCT INTRAFAC COORD SMT X HAD LTSS FROM Y. SYS ERROR. NMAC.
Narrative: SMT X DEPARTED RWY 31L ON COURSE, HDG 280 AND TRANSFERRED TO MY FREQ 125.25. I ATTEMPTED TO OBTAIN CLRNC FOR HIGHER ALT WITH N90 BUT WAS UNABLE. I CLRED THE ACFT OUT OF CLASS B AIRSPACE ABOUT 12 MI W JFK AND ADVISED THAT RADAR SVCS WERE TERMINATED, RESUME OWN NAV. THEN N90 ADVISED HE SHOULD CONTACT AN N90 FREQ. I ADVISED THE PLT. VERY QUICKLY HE CAME BACK TO ME. ADVISED I COULD DO NO MORE AND AGAIN ADVISED RESUME OWN NAV, FREQ CHANGE APPROVED. I OBSERVED THE ACFT CONTINUE ON ITS HDG, APCHING EWR ARPT. I ADVISED EWR TWR BY POINTOUT. I THEN OBSERVED AN ACFT ON FINAL DSNDING OUT OF 2000 ON CONVERGING COURSE WITH SMT X. IMMEDIATELY AFTER, TARGETS MERGED, I OBSERVED EWR TFC Y (ACR) CLBING ABOVE 2000 (MODE C). WHEN THE TARGETS MERGED, THE ALTS WERE THE SAME.
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.