Widebody transport flight crew with oceanic control inserts wrong coordination in INS.

Attributes
ACN	146878
Time
Date	199005
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : kef
State Reference	FO
Altitude	msl bound lower : 31000 msl bound upper : 31000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : eggx
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Navigation In Use	Other
Flight Phase	cruise other
Route In Use	enroute : other oceanic
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 250 flight time total : 20000 flight time type : 2500
ASRS Report	146878
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 50 flight time total : 13000 flight time type : 600
ASRS Report	146514
Events
Anomaly	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	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Was given rerte change from 60N 20W to 61N 20W. This change was not understood and proceeded on original route to 60N 20W. No conflict occurred but was advised of our navigation error. Supplemental information from acn 146514. Approximately 200 mi off. Supplemental information from acn 146864. I should have double check navigation data in INS.

Original NASA ASRS Text

Title: WDB FLT CREW WITH OCEANIC CONTROL INSERTS WRONG COORD IN INS.

Narrative: WAS GIVEN RERTE CHANGE FROM 60N 20W TO 61N 20W. THIS CHANGE WAS NOT UNDERSTOOD AND PROCEEDED ON ORIGINAL RTE TO 60N 20W. NO CONFLICT OCCURRED BUT WAS ADVISED OF OUR NAV ERROR. SUPPLEMENTAL INFO FROM ACN 146514. APPROX 200 MI OFF. SUPPLEMENTAL INFO FROM ACN 146864. I SHOULD HAVE DOUBLE CHK NAV DATA IN INS.

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.