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N90 TRACON controller experienced operational error at approximately 5000 ft when misjudging climb rates of the 2 aircraft involved.
| Attributes | |
| ACN | 668303 |
| Time | |
| Date | 200505 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ewr.airport |
| State Reference | NJ |
| Altitude | msl bound lower : 5000 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90.tracon |
| Operator | general aviation : corporate |
| Make Model Name | Gulfstream IV |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : initial |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : n90.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : initial |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| Experience | controller limited radar : 7 controller radar : 6 controller time certified in position1 : 5 |
| ASRS Report | 668303 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | none taken : insufficient time |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 15000 vertical : 800 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft #1 was vectored swbound and instructed to climb from 4000 ft to 6000 ft when aircraft #2 was instructed to climb to 5000 ft on a converging vector. The disparate climb rates resulted in a loss of minimum separation.
Original NASA ASRS Text
Title: N90 TRACON CTLR EXPERIENCED OPERROR AT APPROX 5000 FT WHEN MISJUDGING CLB RATES OF THE 2 ACFT INVOLVED.
Narrative: ACFT #1 WAS VECTORED SWBOUND AND INSTRUCTED TO CLB FROM 4000 FT TO 6000 FT WHEN ACFT #2 WAS INSTRUCTED TO CLB TO 5000 FT ON A CONVERGING VECTOR. THE DISPARATE CLB RATES RESULTED IN A LOSS OF MINIMUM SEPARATION.
Data retrieved from NASA's ASRS site as of January 2009 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.