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NAVAID problem noted when air carrier S80 indicates off course from centerline J169 after switching to blh VOR.
| Attributes | |
| ACN | 401800 |
| Time | |
| Date | 199805 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : blh |
| State Reference | CA |
| Altitude | msl bound lower : 33000 msl bound upper : 33000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla tower : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other other vortac |
| Flight Phase | cruise other |
| Route In Use | enroute airway : j169 enroute airway : j50 |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 401800 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | other anomaly other other spatial deviation |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 39000 vertical : 0 |
| Supplementary | |
| Primary Problem | Navigational Facility |
| Air Traffic Incident | other |
| Situations | |
| Navigational Aid | Unspecified |
Narrative:
FL330. Location: trm radial for J169. On J169 from trm to blh, a 70 mi leg, indicating centerline at 35 mi east of trm, when I switched to the blh VOR and the airway then indicated I was several mi north of the airway. ATC then said to turn right 20 degrees to return to airway and for traffic descending through my altitude from the east. TCASII showed 6 or 7 mi separation. I inquired of center about the jump in airway indications and was told that it was a NAVAID problem. I know for sure that I was centerline for J169 -- dead centerline as it indicated from the trm VOR at 35 mi.
Original NASA ASRS Text
Title: NAVAID PROB NOTED WHEN ACR S80 INDICATES OFF COURSE FROM CTRLINE J169 AFTER SWITCHING TO BLH VOR.
Narrative: FL330. LOCATION: TRM RADIAL FOR J169. ON J169 FROM TRM TO BLH, A 70 MI LEG, INDICATING CTRLINE AT 35 MI E OF TRM, WHEN I SWITCHED TO THE BLH VOR AND THE AIRWAY THEN INDICATED I WAS SEVERAL MI N OF THE AIRWAY. ATC THEN SAID TO TURN R 20 DEGS TO RETURN TO AIRWAY AND FOR TFC DSNDING THROUGH MY ALT FROM THE E. TCASII SHOWED 6 OR 7 MI SEPARATION. I INQUIRED OF CTR ABOUT THE JUMP IN AIRWAY INDICATIONS AND WAS TOLD THAT IT WAS A NAVAID PROB. I KNOW FOR SURE THAT I WAS CTRLINE FOR J169 -- DEAD CTRLINE AS IT INDICATED FROM THE TRM VOR AT 35 MI.
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.