|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1201 To 1800|
|Locale Reference||atc facility : mol|
|Altitude||msl bound lower : 33000|
msl bound upper : 33000
|Controlling Facilities||artcc : zdc|
artcc : atl
|Operator||common carrier : air carrier|
|Make Model Name||Medium Large Transport, Low Wing, 2 Turbojet Eng|
|Navigation In Use||Other |
|Flight Phase||cruise other|
|Route In Use||enroute airway : j42|
|Affiliation||company : air carrier|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : atp|
|Experience||flight time last 90 days : 215|
flight time total : 21000
|Affiliation||government : faa|
|Function||controller : radar|
|Qualification||controller : radar|
|Anomaly||non adherence : clearance|
other spatial deviation
|Independent Detector||other controllera|
|Resolutory Action||controller : issued new clearance|
|Primary Problem||Navigational Facility|
|Air Traffic Incident||other|
Center controller called for an immediate right turn of 70 degree. Controller said we were 15 mi north of course. It was approximately 1 min from start of right turn until we had full scale deflection of VOR needle to right of J42 centerline. With full scale deflection on HSI (to right) needle, controller advised we were on course. Subsequent controllers agreed that #1 VOR receiver was in error in varying amounts. Checking 2 VOR receivers together showed an error, but within limits. Could both VOR receivers have had an error in the same direction, and could the VOR itself had an error along with washington center radar?
Original NASA ASRS Text
Title: ACR MLG DEVIATED FROM CLRNC ROUTE.
Narrative: CTR CTLR CALLED FOR AN IMMEDIATE R TURN OF 70 DEG. CTLR SAID WE WERE 15 MI N OF COURSE. IT WAS APPROX 1 MIN FROM START OF R TURN UNTIL WE HAD FULL SCALE DEFLECTION OF VOR NEEDLE TO RIGHT OF J42 CENTERLINE. WITH FULL SCALE DEFLECTION ON HSI (TO RIGHT) NEEDLE, CTLR ADVISED WE WERE ON COURSE. SUBSEQUENT CTLRS AGREED THAT #1 VOR RECEIVER WAS IN ERROR IN VARYING AMOUNTS. CHKING 2 VOR RECEIVERS TOGETHER SHOWED AN ERROR, BUT WITHIN LIMITS. COULD BOTH VOR RECEIVERS HAVE HAD AN ERROR IN THE SAME DIRECTION, AND COULD THE VOR ITSELF HAD AN ERROR ALONG WITH WASHINGTON CTR RADAR?
Data retrieved from NASA's ASRS site as of August 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.