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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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An air carrier L1011 flight crew misunderstood their route clearance and had to be assisted by the en route ARTCC controller.
| Attributes | |
| ACN | 397550 |
| Time | |
| Date | 199802 |
| Day | Sat |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | atc facility : jed |
| State Reference | FO |
| Altitude | msl bound lower : 25000 msl bound upper : 33000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : oejd |
| Operator | common carrier : air carrier |
| Make Model Name | L-1011 Tri-Star All Series |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude cruise other |
| 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 : 18 flight time total : 18500 flight time type : 3500 |
| ASRS Report | 397550 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | non adherence : clearance non adherence : far other anomaly other other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Received ATC clearance as B417 B418 bombay. B417 was our clearance, but not continuing on B418 which stops before arriving in bombay. We were originally flight planned for B417 talma UL300 alpex UL300 mct B415 marob R219E sumos direct. We made the mistake of 'assuming' that B417/B418 was 'as filed.' ATC told us of our error and corrected our routing, however, to a dead end airway. After many changes, vectors, reinstalling waypoints we received a clearance we could follow. Don't 'assume' that the first leg of your clearance as being the same as 'as filed.'
Original NASA ASRS Text
Title: AN ACR L1011 FLC MISUNDERSTOOD THEIR RTE CLRNC AND HAD TO BE ASSISTED BY THE ENRTE ARTCC CTLR.
Narrative: RECEIVED ATC CLRNC AS B417 B418 BOMBAY. B417 WAS OUR CLRNC, BUT NOT CONTINUING ON B418 WHICH STOPS BEFORE ARRIVING IN BOMBAY. WE WERE ORIGINALLY FLT PLANNED FOR B417 TALMA UL300 ALPEX UL300 MCT B415 MAROB R219E SUMOS DIRECT. WE MADE THE MISTAKE OF 'ASSUMING' THAT B417/B418 WAS 'AS FILED.' ATC TOLD US OF OUR ERROR AND CORRECTED OUR ROUTING, HOWEVER, TO A DEAD END AIRWAY. AFTER MANY CHANGES, VECTORS, REINSTALLING WAYPOINTS WE RECEIVED A CLRNC WE COULD FOLLOW. DON'T 'ASSUME' THAT THE FIRST LEG OF YOUR CLRNC AS BEING THE SAME AS 'AS FILED.'
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.