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L30 controller expressed concern regarding las tower controller's application of visual separation techniques and RNAV departure procedures.
| Attributes | |
| ACN | 663950 |
| Time | |
| Date | 200507 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : las.airport |
| State Reference | NV |
| Altitude | msl single value : 6300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : l30.tracon tower : las.tower |
| Operator | common carrier : air carrier |
| Make Model Name | A319 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : initial climbout : takeoff |
| Route In Use | departure sid : tralr |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : l30.tracon tower : las.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : takeoff climbout : initial |
| Route In Use | departure sid : tralr |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : developmental |
| Experience | controller radar : 14 controller supervisory : 1 controller time certified in position1 : 8 |
| ASRS Report | 663950 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : local |
| Events | |
| Anomaly | conflict : airborne less severe |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued new clearance |
| Miss Distance | horizontal : 3000 vertical : 800 |
| Supplementary | |
| Problem Areas | FAA ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Situations | |
| ATC Facility | procedure or policy : las.tower |
Narrative:
Air carrier X departed on tralr RNAV departure procedure. Air carrier Y departed right behind on perfum RNAV departure. I assume tower launched both aircraft using visual separation. Fairly busy departure push. Someone keyed up and asked 'what departure is air carrier X on?' after some confusion; determined it was air carrier Y asking question. Told air carrier Y that he would diverge with air carrier X at ropr; and 'don't pass him.' air carrier Y indicated he would pass him. I then stopped air carrier X at 6000 ft and kept air carrier Y climbing to avoid a loss of separation. Yet another problem with the las RNAV departure procedures.
Original NASA ASRS Text
Title: L30 CTLR EXPRESSED CONCERN REGARDING LAS TWR CTLR'S APPLICATION OF VISUAL SEPARATION TECHNIQUES AND RNAV DEP PROCS.
Narrative: ACR X DEPARTED ON TRALR RNAV DEP PROC. ACR Y DEPARTED RIGHT BEHIND ON PERFUM RNAV DEP. I ASSUME TWR LAUNCHED BOTH ACFT USING VISUAL SEPARATION. FAIRLY BUSY DEP PUSH. SOMEONE KEYED UP AND ASKED 'WHAT DEP IS ACR X ON?' AFTER SOME CONFUSION; DETERMINED IT WAS ACR Y ASKING QUESTION. TOLD ACR Y THAT HE WOULD DIVERGE WITH ACR X AT ROPR; AND 'DON'T PASS HIM.' ACR Y INDICATED HE WOULD PASS HIM. I THEN STOPPED ACR X AT 6000 FT AND KEPT ACR Y CLBING TO AVOID A LOSS OF SEPARATION. YET ANOTHER PROB WITH THE LAS RNAV DEP PROCS.
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.