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WW24 climb through assigned altitude had less than standard separation from air carrier heavy jet. System error.
| Attributes | |
| ACN | 295102 |
| Time | |
| Date | 199501 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : phl |
| State Reference | PA |
| Altitude | msl bound lower : 5000 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : phl |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : corporate |
| Make Model Name | IAI1124/1124A/Westwind |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| Experience | controller radar : 6 |
| ASRS Report | 295102 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 12000 vertical : 800 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Heavy jet departs runway 9 out of 3000 ft turned sbound for climb to 10000 ft. Tower departs a westwind jet off runway 17 with a turn to heading 110 degree climbing to 5000 ft. Radar controller issued radar contact with no additional climb. Heavy jet slow to climb, westwind climbing at a rapid rate. Controller stops climb of westwind at 4000 ft, and issued traffic call. Thrust from the westwind climb took the aircraft to 4300 ft. While the heavy jet is climbing through 5100 ft, westwind reports traffic in sight. Told to maintain visual separation.
Original NASA ASRS Text
Title: WW24 CLB THROUGH ASSIGNED ALT HAD LTSS FROM ACR HVY JET. SYS ERROR.
Narrative: HVY JET DEPARTS RWY 9 OUT OF 3000 FT TURNED SBOUND FOR CLB TO 10000 FT. TWR DEPARTS A WESTWIND JET OFF RWY 17 WITH A TURN TO HDG 110 DEG CLBING TO 5000 FT. RADAR CTLR ISSUED RADAR CONTACT WITH NO ADDITIONAL CLB. HVY JET SLOW TO CLB, WESTWIND CLBING AT A RAPID RATE. CTLR STOPS CLB OF WESTWIND AT 4000 FT, AND ISSUED TFC CALL. THRUST FROM THE WESTWIND CLB TOOK THE ACFT TO 4300 FT. WHILE THE HVY JET IS CLBING THROUGH 5100 FT, WESTWIND RPTS TFC IN SIGHT. TOLD TO MAINTAIN VISUAL SEPARATION.
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.