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P50 departure controller concerned with recurrent phx local controller misapplication of visual separation between multiple departures when B737 overtakes C650 on initial, common SID routing.
| Attributes | |
| ACN | 540026 |
| Time | |
| Date | 200203 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : pxr.vortac |
| State Reference | AZ |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : p50.tracon tower : phx.tower |
| Operator | general aviation : corporate |
| Make Model Name | Citation III, VI, VII |
| Operating Under FAR Part | Part 135 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure sid : sjn 2 |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : p50.tracon tower : phx.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure sid : tfdi |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| Experience | controller limited radar : 14 controller military : 5 controller non radar : 13 controller radar : 14 controller time certified in position1 : 3 |
| ASRS Report | 540026 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : local |
| Events | |
| Anomaly | conflict : airborne critical non adherence : required legal separation non adherence : published procedure |
| Independent Detector | atc equipment : conflict alert aircraft equipment : tcas |
| Resolutory Action | flight crew : took evasive action |
| Consequence | faa : investigated |
| Supplementary | |
| Problem Areas | Aircraft ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Inter Facility Coordination Failure Operational Error |
Narrative:
Phx tower launched aircraft X (a C650) on the sjn 2 departure. Behind aircraft X, phx tower launched air carrier Y (a B733) on the tfd 1 departure. Air carrier Y was told to maintain visual separation from aircraft X (I assume). Air carrier Y was approximately 70-80 KTS faster than aircraft X. These departures are required to fly the same route until 4 DME east of phx. Aircraft X responded to an RA as air carrier Y overtook aircraft X. What caused this chain of events was the incorrect use of visual separation by the local controller at phx tower. This situation happens often and yet this procedure continues.
Original NASA ASRS Text
Title: P50 DEP CTLR CONCERNED WITH RECURRENT PHX LCL CTLR MISAPPLICATION OF VISUAL SEPARATION BTWN MULTIPLE DEPS WHEN B737 OVERTAKES C650 ON INITIAL, COMMON SID ROUTING.
Narrative: PHX TWR LAUNCHED ACFT X (A C650) ON THE SJN 2 DEP. BEHIND ACFT X, PHX TWR LAUNCHED ACR Y (A B733) ON THE TFD 1 DEP. ACR Y WAS TOLD TO MAINTAIN VISUAL SEPARATION FROM ACFT X (I ASSUME). ACR Y WAS APPROX 70-80 KTS FASTER THAN ACFT X. THESE DEPS ARE REQUIRED TO FLY THE SAME RTE UNTIL 4 DME E OF PHX. ACFT X RESPONDED TO AN RA AS ACR Y OVERTOOK ACFT X. WHAT CAUSED THIS CHAIN OF EVENTS WAS THE INCORRECT USE OF VISUAL SEPARATION BY THE LCL CTLR AT PHX TWR. THIS SIT HAPPENS OFTEN AND YET THIS PROC CONTINUES.
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.