An air carrier medium large transport was advised by ATC that he was 10 mi off course and about to e...

Attributes
ACN	244164
Time
Date	199306
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : den
State Reference	CO
Altitude	msl bound lower : 31000 msl bound upper : 31000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdv
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 210 flight time total : 8000 flight time type : 210
ASRS Report	244797
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 6000 flight time type : 500
ASRS Report	244164
Events
Anomaly	airspace violation : entry non adherence : clearance other anomaly other other anomaly other other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Ambiguous
Situations
Navigational Aid	Unspecified

Narrative:

We didn't even know there was a problem because both our vors were showing on course. We were approximately 95 mi northeast of den VORTAC on the 046 degree radial (J114). ZDV advised us we were 10 mi north of course and entering new rimer restr airspace. The controller told us to turn 30 degrees to the left. We immediately did so and approximately 75 seconds later, center cleared us on course. Our navigation instruments showed us to be south of course. We continued to navigation the remainder of the trip just slightly south of course centerline. The controller told us to have our navigation instruments checked. I've spoken with capts that have had navigational problems in the same area in different aircraft.

Original NASA ASRS Text

Title: AN ACR MLG WAS ADVISED BY ATC THAT HE WAS 10 MI OFF COURSE AND ABOUT TO ENTER A MOA.

Narrative: WE DIDN'T EVEN KNOW THERE WAS A PROB BECAUSE BOTH OUR VORS WERE SHOWING ON COURSE. WE WERE APPROX 95 MI NE OF DEN VORTAC ON THE 046 DEG RADIAL (J114). ZDV ADVISED US WE WERE 10 MI N OF COURSE AND ENTERING NEW RIMER RESTR AIRSPACE. THE CTLR TOLD US TO TURN 30 DEGS TO THE L. WE IMMEDIATELY DID SO AND APPROX 75 SECONDS LATER, CTR CLRED US ON COURSE. OUR NAV INSTS SHOWED US TO BE S OF COURSE. WE CONTINUED TO NAV THE REMAINDER OF THE TRIP JUST SLIGHTLY S OF COURSE CTRLINE. THE CTLR TOLD US TO HAVE OUR NAV INSTS CHKED. I'VE SPOKEN WITH CAPTS THAT HAVE HAD NAVIGATIONAL PROBS IN THE SAME AREA IN DIFFERENT ACFT.

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 air carrier medium large transport was advised by ATC that he was 10 mi off course and about to enter a MOA.