 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Pso TRACON expressed concern regarding STAR speed restr wording that sometimes caused aircraft to slow below expected speeds.
| Attributes | |
| ACN | 712640 |
| Time | |
| Date | 200609 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : p50.tracon |
| State Reference | AZ |
| Altitude | msl bound lower : 8000 msl bound upper : 12000 |
| Aircraft 1 | |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller non radar : 5 controller radar : 10 |
| ASRS Report | 712640 |
| Events | |
| Resolutory Action | none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | Chart Or Publication FAA |
| Primary Problem | Chart Or Publication |
| Situations | |
| ATC Facility | procedure or policy : p50.tracon |
Narrative:
The current stars for phoenix have crossing restrs at the TRACON boundary. These consist of an altitude (12000 ft or 11000 ft) and an airspeed of 250 KTS. The wording on the STAR leaves plenty of room for interpretation for the airspeed. Since it's a crossing speed; is the pilot supposed to 'maintain' 250 KTS? Or can he slow down at his discretion after the crossing point? There have been numerous situations of pilots slowing down without asking/informing ATC. This creates an unsafe situation for the aircraft following. Compression and possible operrors occur because of this. Solution: all stars should be published with the wording to cross the fix at a speed and to 'maintain' that speed.
Original NASA ASRS Text
Title: PSO TRACON EXPRESSED CONCERN REGARDING STAR SPD RESTR WORDING THAT SOMETIMES CAUSED ACFT TO SLOW BELOW EXPECTED SPDS.
Narrative: THE CURRENT STARS FOR PHOENIX HAVE XING RESTRS AT THE TRACON BOUNDARY. THESE CONSIST OF AN ALT (12000 FT OR 11000 FT) AND AN AIRSPD OF 250 KTS. THE WORDING ON THE STAR LEAVES PLENTY OF ROOM FOR INTERP FOR THE AIRSPD. SINCE IT'S A XING SPD; IS THE PLT SUPPOSED TO 'MAINTAIN' 250 KTS? OR CAN HE SLOW DOWN AT HIS DISCRETION AFTER THE XING POINT? THERE HAVE BEEN NUMEROUS SITUATIONS OF PLTS SLOWING DOWN WITHOUT ASKING/INFORMING ATC. THIS CREATES AN UNSAFE SITUATION FOR THE ACFT FOLLOWING. COMPRESSION AND POSSIBLE OPERRORS OCCUR BECAUSE OF THIS. SOLUTION: ALL STARS SHOULD BE PUBLISHED WITH THE WORDING TO CROSS THE FIX AT A SPD AND TO 'MAINTAIN' THAT SPD.
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.