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Flight crew of a B767 failed to follow a change in a SID departure clearance due to frequency congestion and the lateness with which ATC provided the clearance.
| Attributes | |
| ACN | 382010 |
| Time | |
| Date | 199710 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : las |
| State Reference | NV |
| Altitude | msl bound lower : 15000 msl bound upper : 15000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla tracon : las |
| Operator | common carrier : air carrier |
| Make Model Name | B767 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other departure sid : sid enroute airway : zla |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 19000 flight time type : 5000 |
| ASRS Report | 382010 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
First officer was flying departure. Departing las runway 25R we were cleared via the oveto departure. After takeoff we were told to maintain runway heading for vectors. Eventually we were vectored to an easterly heading with clearance to 15000 ft. Expecting to intercept the oveto departure route on a very busy and congested frequency, we were told to 'fly present heading, intercept the las 039 degree radial to oveto and fly the oveto departure, contact departure on another frequency.' as I switched frequencys, the first officer tuned in the las 039 degree radial and saw we were past it. I asked the new controller for verification of clearance and he said he didn't know what our clearance was, to do what the last controller told us to do, and that he didn't have authority/authorized to give us any turns or to clear us directly to oveto. We maintained heading and intercepted the oveto departure since we could not receive clarification on our clearance.
Original NASA ASRS Text
Title: FLC OF A B767 FAILED TO FOLLOW A CHANGE IN A SID DEP CLRNC DUE TO FREQ CONGESTION AND THE LATENESS WITH WHICH ATC PROVIDED THE CLRNC.
Narrative: FO WAS FLYING DEP. DEPARTING LAS RWY 25R WE WERE CLRED VIA THE OVETO DEP. AFTER TKOF WE WERE TOLD TO MAINTAIN RWY HDG FOR VECTORS. EVENTUALLY WE WERE VECTORED TO AN EASTERLY HDG WITH CLRNC TO 15000 FT. EXPECTING TO INTERCEPT THE OVETO DEP RTE ON A VERY BUSY AND CONGESTED FREQ, WE WERE TOLD TO 'FLY PRESENT HDG, INTERCEPT THE LAS 039 DEG RADIAL TO OVETO AND FLY THE OVETO DEP, CONTACT DEP ON ANOTHER FREQ.' AS I SWITCHED FREQS, THE FO TUNED IN THE LAS 039 DEG RADIAL AND SAW WE WERE PAST IT. I ASKED THE NEW CTLR FOR VERIFICATION OF CLRNC AND HE SAID HE DIDN'T KNOW WHAT OUR CLRNC WAS, TO DO WHAT THE LAST CTLR TOLD US TO DO, AND THAT HE DIDN'T HAVE AUTH TO GIVE US ANY TURNS OR TO CLR US DIRECTLY TO OVETO. WE MAINTAINED HDG AND INTERCEPTED THE OVETO DEP SINCE WE COULD NOT RECEIVE CLARIFICATION ON OUR CLRNC.
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.