 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
B757 flight crew provide sequencing suggestion to sct due to fuel considerations and airspace efficiency.
| Attributes | |
| ACN | 528155 |
| Time | |
| Date | 200110 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : sct.tracon |
| State Reference | CA |
| Altitude | msl single value : 12000 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : sct.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer only : 25l other |
| Flight Phase | descent : approach |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : sct.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| ASRS Report | 528155 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | other |
| Supplementary | |
| Problem Areas | Airspace Structure Airport ATC Human Performance Environmental Factor |
| Primary Problem | ATC Human Performance |
| Situations | |
| ATC Facility | procedure or policy : sct.tracon |
Narrative:
We were given 320 KTS or better during our approach on the pdz runway 25L. Somewhere outside of arnes, the controller said he had a change in plans, and was now going to cross an air carrier Y S80 from our left over to runway 24R. We were given a heading of 280 degrees or so, to intercept runway 25L ILS, maintain 12000 ft, and reduce to 250 KTS. Soon after that, another reduction to 220 KTS. Eventually, they picked us back up to 230 KTS. While this really wasn't a safety concern, it seems somewhat inefficient for fuel use, considering today's times. Seems to me, the prudent thing to have done, was just let us continue coming down on the arrival, and pass the S80 overhead us, rather than having us put the brakes on so that he could cross ahead of us at our latitude. He was initially just behind us.
Original NASA ASRS Text
Title: B757 FLC PROVIDE SEQUENCING SUGGESTION TO SCT DUE TO FUEL CONSIDERATIONS AND AIRSPACE EFFICIENCY.
Narrative: WE WERE GIVEN 320 KTS OR BETTER DURING OUR APCH ON THE PDZ RWY 25L. SOMEWHERE OUTSIDE OF ARNES, THE CTLR SAID HE HAD A CHANGE IN PLANS, AND WAS NOW GOING TO CROSS AN ACR Y S80 FROM OUR L OVER TO RWY 24R. WE WERE GIVEN A HDG OF 280 DEGS OR SO, TO INTERCEPT RWY 25L ILS, MAINTAIN 12000 FT, AND REDUCE TO 250 KTS. SOON AFTER THAT, ANOTHER REDUCTION TO 220 KTS. EVENTUALLY, THEY PICKED US BACK UP TO 230 KTS. WHILE THIS REALLY WASN'T A SAFETY CONCERN, IT SEEMS SOMEWHAT INEFFICIENT FOR FUEL USE, CONSIDERING TODAY'S TIMES. SEEMS TO ME, THE PRUDENT THING TO HAVE DONE, WAS JUST LET US CONTINUE COMING DOWN ON THE ARR, AND PASS THE S80 OVERHEAD US, RATHER THAN HAVING US PUT THE BRAKES ON SO THAT HE COULD CROSS AHEAD OF US AT OUR LAT. HE WAS INITIALLY JUST BEHIND US.
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.