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An MD80 crew, on arrival to las, watched the aircraft turn direct to boulder instead of flying the arrival.
| Attributes | |
| ACN | 539522 |
| Time | |
| Date | 200202 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : bty.vortac |
| State Reference | NV |
| Altitude | msl single value : 27000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Plan | IFR |
| Aircraft 2 | |
| Navigation In Use | other other vortac |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival star : fussy 5 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 12000 flight time type : 400 |
| ASRS Report | 539522 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | inflight encounter : weather inflight encounter other non adherence : clearance other spatial deviation |
| Independent Detector | other controllera other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance controller : issued alert |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Weather Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were navigating using the GPS. After crossing beatty VOR, our arrival (fuzzy 5) to las has a turn to fly the 115 degree course to fuzzy intersection. Our GPS turned to go directly to boulder VOR instead. We were about 10 mi south of beatty when the controller asked us to turn to join the course out of beatty. We were approximately 5 mi off course. This was the last leg of a really long day -- 8+ hours of block and over 12 hours of duty. The GPS had been programmed but did not have the fuzzy 5 transition. The crew failed to monitor the GPS navigation during the busy descent at a crucial time (a turn). Too much trust was given to automation. Las vegas WX was a 50 KT wind and a dust storm. We were contemplating our fuel and alternate decision when this occurred.
Original NASA ASRS Text
Title: AN MD80 CREW, ON ARR TO LAS, WATCHED THE ACFT TURN DIRECT TO BOULDER INSTEAD OF FLYING THE ARR.
Narrative: WE WERE NAVING USING THE GPS. AFTER XING BEATTY VOR, OUR ARR (FUZZY 5) TO LAS HAS A TURN TO FLY THE 115 DEG COURSE TO FUZZY INTXN. OUR GPS TURNED TO GO DIRECTLY TO BOULDER VOR INSTEAD. WE WERE ABOUT 10 MI S OF BEATTY WHEN THE CTLR ASKED US TO TURN TO JOIN THE COURSE OUT OF BEATTY. WE WERE APPROX 5 MI OFF COURSE. THIS WAS THE LAST LEG OF A REALLY LONG DAY -- 8+ HRS OF BLOCK AND OVER 12 HRS OF DUTY. THE GPS HAD BEEN PROGRAMMED BUT DID NOT HAVE THE FUZZY 5 TRANSITION. THE CREW FAILED TO MONITOR THE GPS NAV DURING THE BUSY DSCNT AT A CRUCIAL TIME (A TURN). TOO MUCH TRUST WAS GIVEN TO AUTOMATION. LAS VEGAS WX WAS A 50 KT WIND AND A DUST STORM. WE WERE CONTEMPLATING OUR FUEL AND ALTERNATE DECISION WHEN THIS OCCURRED.
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.