An MD11 deviates from a canadian airway when the FMS turns the aircraft too soon on its filed route ...

Attributes
ACN	458490
Time
Date	199912
Day	Sun
Local Time Of Day	0601 To 1200
Place
State Reference	AB
Altitude	msl single value : 37000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : czeg.artcc
Operator	common carrier : air carrier
Make Model Name	MD-11
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : level ground : maintenance
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 5000 flight time type : 2000
ASRS Report	458490
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : clearance non adherence : published procedure other anomaly other other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued advisory controller : issued new clearance
Supplementary
Problem Areas	Airspace Structure Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Panc-jfk, us. Navigation points verified on preflight checklist. Passing yoj VOR, FMS flew J513 out of yoj as programmed. We should have stayed on NCA13 to yqd. Passing yoj, yeg center asked us to confirm our route. We read back what we had filed. Center then cleared us direct yqd. No loss of separation indicated by center nor did he ask any questions. During FMS loading the 'versatile integrated avionics' function should not be relied upon for proper airway intxns. You must doublechk.

Original NASA ASRS Text

Title: AN MD11 DEVIATES FROM A CANADIAN AIRWAY WHEN THE FMS TURNS THE ACFT TOO SOON ON ITS FILED RTE NEAR YOJ, AB.

Narrative: PANC-JFK, US. NAV POINTS VERIFIED ON PREFLT CHKLIST. PASSING YOJ VOR, FMS FLEW J513 OUT OF YOJ AS PROGRAMMED. WE SHOULD HAVE STAYED ON NCA13 TO YQD. PASSING YOJ, YEG CTR ASKED US TO CONFIRM OUR RTE. WE READ BACK WHAT WE HAD FILED. CTR THEN CLRED US DIRECT YQD. NO LOSS OF SEPARATION INDICATED BY CTR NOR DID HE ASK ANY QUESTIONS. DURING FMS LOADING THE 'VERSATILE INTEGRATED AVIONICS' FUNCTION SHOULD NOT BE RELIED UPON FOR PROPER AIRWAY INTXNS. YOU MUST DOUBLECHK.

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.

An MD11 deviates from a canadian airway when the FMS turns the aircraft too soon on its filed route near yoj, ab.