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The pilot made a heading correction to return to track to compensate for a scalloping VOR. He then became occupied with a traffic watch. A few mins later he noticed a full scale deflection on the CDI. As the reporter started to correct the controller gave a new heading for course correction.
| Attributes | |
| ACN | 350653 |
| Time | |
| Date | 199610 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : dkk |
| State Reference | NY |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 350653 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| ASRS Report | 350654 |
| Events | |
| Anomaly | non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Navigational Facility |
| Air Traffic Incident | Pilot Deviation other |
| Situations | |
| Navigational Aid | Unspecified |
Narrative:
While in cruise we noticed the VOR acting very unstable with numerous corrections needed. After what I thought was a good heading correction I became occupied with a traffic watch and a few mins later noticed a full scale deflection. I started to correct when the center gave me a new course for correction. I fly this route quite frequently and notice the vors seem to be very unstable in this area on a continuing basis. No traffic conflicts occurred.
Original NASA ASRS Text
Title: THE PLT MADE A HDG CORRECTION TO RETURN TO TRACK TO COMPENSATE FOR A SCALLOPING VOR. HE THEN BECAME OCCUPIED WITH A TFC WATCH. A FEW MINS LATER HE NOTICED A FULL SCALE DEFLECTION ON THE CDI. AS THE RPTR STARTED TO CORRECT THE CTLR GAVE A NEW HDG FOR COURSE CORRECTION.
Narrative: WHILE IN CRUISE WE NOTICED THE VOR ACTING VERY UNSTABLE WITH NUMEROUS CORRECTIONS NEEDED. AFTER WHAT I THOUGHT WAS A GOOD HDG CORRECTION I BECAME OCCUPIED WITH A TFC WATCH AND A FEW MINS LATER NOTICED A FULL SCALE DEFLECTION. I STARTED TO CORRECT WHEN THE CTR GAVE ME A NEW COURSE FOR CORRECTION. I FLY THIS RTE QUITE FREQUENTLY AND NOTICE THE VORS SEEM TO BE VERY UNSTABLE IN THIS AREA ON A CONTINUING BASIS. NO TFC CONFLICTS 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.