Air carrier X navigation deviation due to poor reception of VOR.

Attributes
ACN	299667
Time
Date	199503
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : bkw
State Reference	WV
Altitude	msl bound lower : 12000 msl bound upper : 12000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Xingu EMB-121 All Series
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	cruise other
Route In Use	arrival other enroute airway : zdc
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 300 flight time total : 10100 flight time type : 5000
ASRS Report	299667
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Navigational Facility
Air Traffic Incident	other
Situations
ATC Facility	procedure or policy : unspecified
Navigational Aid	Unspecified

Narrative:

ATC questioned if we were following the jasen 1 arrival and stated we were 6 mi south of the arrival. This is a recurring problem with this arrival as we are required to track the 072 degree radial out of bkw. This VOR is constantly scalloping from our intercept point at dilnn until our changeover point at finks. We usually can stay somewhat close to the arrival by keeping the CDI swings equidistant. I don't know if the problem is with our equipment or bkw VOR. I have never flown this arrival in any aircraft other than an emb-120 and this happens no matter which E-120 in the fleet I am flying. Callback conversation with reporter revealed the following information: ZDC procedures specialist stated they have had no reports of poor reception on the jasen 1 arrival.

Original NASA ASRS Text

Title: ACR X NAV DEV DUE TO POOR RECEPTION OF VOR.

Narrative: ATC QUESTIONED IF WE WERE FOLLOWING THE JASEN 1 ARR AND STATED WE WERE 6 MI S OF THE ARR. THIS IS A RECURRING PROB WITH THIS ARR AS WE ARE REQUIRED TO TRACK THE 072 DEG RADIAL OUT OF BKW. THIS VOR IS CONSTANTLY SCALLOPING FROM OUR INTERCEPT POINT AT DILNN UNTIL OUR CHANGEOVER POINT AT FINKS. WE USUALLY CAN STAY SOMEWHAT CLOSE TO THE ARR BY KEEPING THE CDI SWINGS EQUIDISTANT. I DON'T KNOW IF THE PROB IS WITH OUR EQUIP OR BKW VOR. I HAVE NEVER FLOWN THIS ARR IN ANY ACFT OTHER THAN AN EMB-120 AND THIS HAPPENS NO MATTER WHICH E-120 IN THE FLEET I AM FLYING. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: ZDC PROCS SPECIALIST STATED THEY HAVE HAD NO RPTS OF POOR RECEPTION ON THE JASEN 1 ARR.

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.