A BE55 pilot is notified by center controller that he is 4 mi off the airway centerline. Pilot had just noted a conflict between his #1 and #2 VOR indicators. Aircraft had been in the shop for modifications and new radios.

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Attributes
ACN	410486
Time
Date	199808
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ewn
State Reference	NC
Altitude	msl bound lower : 7000 msl bound upper : 7000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc
Operator	general aviation : personal
Make Model Name	Baron 55/Cochise
Operating Under FAR Part	Part 91
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	enroute airway : v139
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 15 flight time total : 1350 flight time type : 700
ASRS Report	410486
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	aircraft equipment problem : less severe non adherence : clearance other anomaly other other spatial deviation
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

Departed ewn IFR with ceiling 500 ft, visibility 1 mi on IFR cross country to orf. Cleared to proceed via V139 to orf. Approximately 15 mi northeast of ewn VOR on V139 I realized that the #1 and #2 navigation indications showed opposite deviations of flight path from V139. Before I could discover the 'cause,' ZDC reported I was '4 mi left of V139 centerline.' 'entire' aircraft panel was replaced 3 weeks ago (over $100000 work) in checking all radios and indicators. I had not flown on airway since picking up plane from service center till today. Dual ILS worked well on #1 and #2 when test flown. It turns out the repair facility wired the VOR, but not ILS, output of #1 navigation to HSI reversed, giving opposite needle deviation. I thought I had tested all new radios 3 weeks ago, but with over 2 dozen new devices it is hard to test all combinations comprehensively.

Original NASA ASRS Text

Title: A BE55 PLT IS NOTIFIED BY CTR CTLR THAT HE IS 4 MI OFF THE AIRWAY CTRLINE. PLT HAD JUST NOTED A CONFLICT BTWN HIS #1 AND #2 VOR INDICATORS. ACFT HAD BEEN IN THE SHOP FOR MODIFICATIONS AND NEW RADIOS.

Narrative: DEPARTED EWN IFR WITH CEILING 500 FT, VISIBILITY 1 MI ON IFR XCOUNTRY TO ORF. CLRED TO PROCEED VIA V139 TO ORF. APPROX 15 MI NE OF EWN VOR ON V139 I REALIZED THAT THE #1 AND #2 NAV INDICATIONS SHOWED OPPOSITE DEVS OF FLT PATH FROM V139. BEFORE I COULD DISCOVER THE 'CAUSE,' ZDC RPTED I WAS '4 MI L OF V139 CTRLINE.' 'ENTIRE' ACFT PANEL WAS REPLACED 3 WKS AGO (OVER $100000 WORK) IN CHKING ALL RADIOS AND INDICATORS. I HAD NOT FLOWN ON AIRWAY SINCE PICKING UP PLANE FROM SVC CTR TILL TODAY. DUAL ILS WORKED WELL ON #1 AND #2 WHEN TEST FLOWN. IT TURNS OUT THE REPAIR FACILITY WIRED THE VOR, BUT NOT ILS, OUTPUT OF #1 NAV TO HSI REVERSED, GIVING OPPOSITE NEEDLE DEV. I THOUGHT I HAD TESTED ALL NEW RADIOS 3 WKS AGO, BUT WITH OVER 2 DOZEN NEW DEVICES IT IS HARD TO TEST ALL COMBINATIONS COMPREHENSIVELY.

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.