MD88 FL350 navigating J6 to lrp. D-r message on FMS. Began manual tuning of VOR and crosschecked manual VOR J6 and was 17 mi southwest of lrp. Controller gave vector 270 degrees to return to J6. FMS later updated to ok information and remainder of flight was normal.

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Attributes
ACN	353715
Time
Date	199611
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : lrp
State Reference	PA
Altitude	msl bound lower : 35000 msl bound upper : 35000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zny
Operator	common carrier : air carrier
Make Model Name	MD-88
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : flight engineer pilot : atp pilot : commercial
Experience	flight time last 90 days : 210 flight time total : 7700 flight time type : 500
ASRS Report	353715
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi pilot : atp
Experience	flight time last 90 days : 180 flight time total : 7500 flight time type : 180
ASRS Report	354233
Events
Anomaly	non adherence : clearance other spatial deviation
Independent Detector	other controllera other flight crewa
Resolutory Action	aircraft : equipment problem dissipated flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Primary Problem	Navigational Facility
Air Traffic Incident	other

Narrative:

MD88 in cruise FL350, flight lga-dfw. Flight planned parke J6 lit-dfw inbound to lrp VOR heading 250 degrees, got D/right message on FMS. FMS was navigating to lrp on J6 (navigation track good on line). With D/right messages began manual tuning of vors. FMS map display showed about 10 NM northeast of lrp on J6. Lrp VOR tuned, ATC calls us to come right 270 degrees to intercept J6. At this time xchk of lrp VOR on navigation data (FMS) shows over lrp, lrp VOR xchk shows us 17 NM southwest of lrp. We used manual mode of navigation to regain track on J6 south of lrp. It took several mi and manual tuning of vors before FMS updated to accurate information. Remainder of flight FMS navigation ok.

Original NASA ASRS Text

Title: MD88 FL350 NAVING J6 TO LRP. D-R MESSAGE ON FMS. BEGAN MANUAL TUNING OF VOR AND XCHKED MANUAL VOR J6 AND WAS 17 MI SW OF LRP. CTLR GAVE VECTOR 270 DEGS TO RETURN TO J6. FMS LATER UPDATED TO OK INFO AND REMAINDER OF FLT WAS NORMAL.

Narrative: MD88 IN CRUISE FL350, FLT LGA-DFW. FLT PLANNED PARKE J6 LIT-DFW INBOUND TO LRP VOR HDG 250 DEGS, GOT D/R MESSAGE ON FMS. FMS WAS NAVING TO LRP ON J6 (NAV TRACK GOOD ON LINE). WITH D/R MESSAGES BEGAN MANUAL TUNING OF VORS. FMS MAP DISPLAY SHOWED ABOUT 10 NM NE OF LRP ON J6. LRP VOR TUNED, ATC CALLS US TO COME R 270 DEGS TO INTERCEPT J6. AT THIS TIME XCHK OF LRP VOR ON NAV DATA (FMS) SHOWS OVER LRP, LRP VOR XCHK SHOWS US 17 NM SW OF LRP. WE USED MANUAL MODE OF NAV TO REGAIN TRACK ON J6 S OF LRP. IT TOOK SEVERAL MI AND MANUAL TUNING OF VORS BEFORE FMS UPDATED TO ACCURATE INFO. REMAINDER OF FLT FMS NAV OK.

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.