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ARTCC advised flight crew they were west of course. Flight replied they were on course 131 right of bsr.
| Attributes | |
| ACN | 150294 |
| Time | |
| Date | 199007 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : bsr |
| State Reference | CA |
| Altitude | msl bound lower : 37000 msl bound upper : 37000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | other vortac |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : cfi pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 220 flight time total : 8000 flight time type : 3500 |
| ASRS Report | 150294 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : instrument |
| Events | |
| Anomaly | other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
| Situations | |
| Navigational Aid | Unspecified |
Narrative:
Center reported we were west of course, while our VOR's reported on course. It had been my experience over the last several months that the big sur VOR is close to being unreliable in the vicinity of the 131 degree right 80-100 NM. Varied fluctuations in the course needle, among different aircraft. Ie, not the aircraft but the VOR reliability is in question. We also report that to ATC.
Original NASA ASRS Text
Title: ARTCC ADVISED FLC THEY WERE WEST OF COURSE. FLT REPLIED THEY WERE ON COURSE 131 R OF BSR.
Narrative: CTR RPTED WE WERE W OF COURSE, WHILE OUR VOR'S RPTED ON COURSE. IT HAD BEEN MY EXPERIENCE OVER THE LAST SEVERAL MONTHS THAT THE BIG SUR VOR IS CLOSE TO BEING UNRELIABLE IN THE VICINITY OF THE 131 DEG R 80-100 NM. VARIED FLUCTUATIONS IN THE COURSE NEEDLE, AMONG DIFFERENT ACFT. IE, NOT THE ACFT BUT THE VOR RELIABILITY IS IN QUESTION. WE ALSO RPT THAT TO ATC.
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.