ARTCC advises medium large transport that it is off course, flight crew claims VOR's checked, tuned, and centered. Subsequent maintenance check shows proper operation of VOR receivers.

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Attributes
ACN	129469
Time
Date	198911
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : orf
State Reference	VA
Altitude	msl bound lower : 35000 msl bound upper : 35000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Route In Use	enroute airway : j121
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 180 flight time total : 3000 flight time type : 360
ASRS Report	129469
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 180 flight time total : 14000 flight time type : 180
ASRS Report	129467
Events
Anomaly	other spatial deviation
Independent Detector	other controllera
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Ambiguous
Air Traffic Incident	other

Narrative:

After departing bwi we intercepted J-121, southwest of norfolk. ZDC advised us we were 8-10 mi southeast of cus. Both captain and first officer VOR tuned properly, good signal, proper course selected in pdi and centered. No other facility previous to this mentioned a problem and several checks with ZJX showed our equipment reliable. ZDC declared our VOR equipment unreliable and issued radar vectors and handling to our mco destination. A maintenance ground check indicated accurate VOR equipment.

Original NASA ASRS Text

Title: ARTCC ADVISES MLG THAT IT IS OFF COURSE, FLT CREW CLAIMS VOR'S CHECKED, TUNED, AND CENTERED. SUBSEQUENT MAINTENANCE CHECK SHOWS PROPER OPERATION OF VOR RECEIVERS.

Narrative: AFTER DEPARTING BWI WE INTERCEPTED J-121, SW OF NORFOLK. ZDC ADVISED US WE WERE 8-10 MI SE OF CUS. BOTH CAPT AND F/O VOR TUNED PROPERLY, GOOD SIGNAL, PROPER COURSE SELECTED IN PDI AND CENTERED. NO OTHER FACILITY PREVIOUS TO THIS MENTIONED A PROBLEM AND SEVERAL CHECKS WITH ZJX SHOWED OUR EQUIPMENT RELIABLE. ZDC DECLARED OUR VOR EQUIPMENT UNRELIABLE AND ISSUED RADAR VECTORS AND HANDLING TO OUR MCO DEST. A MAINT GND CHECK INDICATED ACCURATE VOR EQUIPMENT.

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.