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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Flight crew of an air carrier overshot a crossing restr on descent arrival due to the frequent changing by approach control of runway assignment using a glass cockpit aircraft automatic system (FMS).
| Attributes | |
| ACN | 333660 |
| Time | |
| Date | 199604 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : lax |
| State Reference | AZ |
| Altitude | msl bound lower : 11300 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | arrival other arrival star : star enroute airway : lax |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 230 flight time total : 22000 flight time type : 3000 |
| ASRS Report | 333660 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : crossing restriction not met non adherence : clearance non adherence : published procedure other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : became reoriented none taken : anomaly accepted |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Pilot Deviation |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
Approach advised us to expect runway 24L, then cleared us for runway 25R, then back to runway 24L, then back to runway 25R. A crossing of bremr (at or above 12000 ft) was missed due to going to runway 24R where no such restr is required, then back to runway 25L where it is, but we were now at 11300 ft. I told approach to make up their minds as they had changed us 4 times and we were a glass cockpit. Approach responded that she didn't care as long as our bantering would cease. To change runways at lax has become a very common approach. I don't believe they understand the increased workload they cause with having to reprogram FMS system and rebrief approachs. This problem cannot be allowed to continue.
Original NASA ASRS Text
Title: FLC OF AN ACR OVERSHOT A XING RESTR ON DSCNT ARR DUE TO THE FREQUENT CHANGING BY APCH CTL OF RWY ASSIGNMENT USING A GLASS COCKPIT ACFT AUTO SYS (FMS).
Narrative: APCH ADVISED US TO EXPECT RWY 24L, THEN CLRED US FOR RWY 25R, THEN BACK TO RWY 24L, THEN BACK TO RWY 25R. A XING OF BREMR (AT OR ABOVE 12000 FT) WAS MISSED DUE TO GOING TO RWY 24R WHERE NO SUCH RESTR IS REQUIRED, THEN BACK TO RWY 25L WHERE IT IS, BUT WE WERE NOW AT 11300 FT. I TOLD APCH TO MAKE UP THEIR MINDS AS THEY HAD CHANGED US 4 TIMES AND WE WERE A GLASS COCKPIT. APCH RESPONDED THAT SHE DIDN'T CARE AS LONG AS OUR BANTERING WOULD CEASE. TO CHANGE RWYS AT LAX HAS BECOME A VERY COMMON APCH. I DON'T BELIEVE THEY UNDERSTAND THE INCREASED WORKLOAD THEY CAUSE WITH HAVING TO REPROGRAM FMS SYS AND REBRIEF APCHS. THIS PROB CANNOT BE ALLOWED TO CONTINUE.
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.