Gross navigation error.

Attributes
ACN	247713
Time
Date	199307
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : 2cqx
State Reference	NF
Altitude	msl bound lower : 43000 msl bound upper : 43000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	cruise other
Route In Use	enroute : other oceanic enroute : atlantic enroute airway : czqx
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 260 flight time total : 2050 flight time type : 500
ASRS Report	247713
Person 2
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	faa : investigated Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

The navigation equipment was programmed to cross 55 north 050 west and the display showed this position. Due to a malfunction, our point of radar contact was at 50 north 50 west. We were informed by gander center of the navigation error. The aircraft was brought to FBO where the global navigation equipment had been removed and we awaited a report on the condition of the equipment. After we were informed by gander we checked the position for the rest of the crossing. They appeared to be correct.

Original NASA ASRS Text

Title: GROSS NAV ERROR.

Narrative: THE NAV EQUIP WAS PROGRAMMED TO CROSS 55 N 050 W AND THE DISPLAY SHOWED THIS POS. DUE TO A MALFUNCTION, OUR POINT OF RADAR CONTACT WAS AT 50 N 50 W. WE WERE INFORMED BY GANDER CTR OF THE NAV ERROR. THE ACFT WAS BROUGHT TO FBO WHERE THE GLOBAL NAV EQUIP HAD BEEN REMOVED AND WE AWAITED A RPT ON THE CONDITION OF THE EQUIP. AFTER WE WERE INFORMED BY GANDER WE CHKED THE POS FOR THE REST OF THE XING. THEY APPEARED TO BE CORRECT.

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.