Medium large transport has navigation receiver problem, experiences track deviation.

Attributes
ACN	128624
Time
Date	198911
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : iad
State Reference	VA
Altitude	msl bound lower : 12000 msl bound upper : 19000
Environment
Flight Conditions	Mixed
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Route In Use	enroute airway : j518
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi pilot : atp
Experience	flight time last 90 days : 100 flight time total : 14000 flight time type : 100
ASRS Report	128624
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 150 flight time total : 3500 flight time type : 320
ASRS Report	131592
Events
Anomaly	aircraft equipment problem : less severe non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	flight crew : returned to intended course or assigned course other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Departed iad, given a vector to intercept J518. Radios verified and checked and turned for proper radial, frequency and operation after ATC notified me of being 10 DME north of the arwy. The dci needle never moved. I exercised the obs by rotating it and the needle 'flung' across the face of the VOR-cal instrument. We wrote up a maintenance repair on #1 VOR in the log book. (Note: first officer VOR set to subsequent fix, but distance gave unreliable indication.)

Original NASA ASRS Text

Title: MLG HAS NAVIGATION RECEIVER PROBLEM, EXPERIENCES TRACK DEVIATION.

Narrative: DEPARTED IAD, GIVEN A VECTOR TO INTERCEPT J518. RADIOS VERIFIED AND CHKED AND TURNED FOR PROPER RADIAL, FREQ AND OPERATION AFTER ATC NOTIFIED ME OF BEING 10 DME N OF THE ARWY. THE DCI NEEDLE NEVER MOVED. I EXERCISED THE OBS BY ROTATING IT AND THE NEEDLE 'FLUNG' ACROSS THE FACE OF THE VOR-CAL INSTRUMENT. WE WROTE UP A MAINT REPAIR ON #1 VOR IN THE LOG BOOK. (NOTE: F/O VOR SET TO SUBSEQUENT FIX, BUT DISTANCE GAVE UNRELIABLE INDICATION.)

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.