Narrative:

During an IFR cross country flight, we were advised by our controller we were 5 NM off centerline of our victor airway, despite our CDI on our #2 navigation showing us as directly on course. Center advised us of the deviation and we changed to our #1 navigation without further course deviation. Later in the flight, at an assigned altitude of 4000 ft MSL, we were attempting to determine the exact error in our #2 navigation. During this time, our attention was diverted and were advised by center that we were some 450 ft above our assigned altitude. Out altimeter showed a 250 ft deviation. We obtained the local altimeter setting from center, corrected our altitude deviation, aborted our attempts to analyze our #2 navigation error and completed the flight without further incident.

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Original NASA ASRS Text

Title: INSTRUCTOR PLT, WITH INST STUDENT ON AN IFR XCOUNTRY TRAINING FLT, WAS ADVISED BY ATC THAT THEY WERE 5 MI OFF COURSE. THEY WERE SUBSEQUENTLY ADVISED THAT THEY WERE SHOWING 450 FT OVER ASSIGNED ALT.

Narrative: DURING AN IFR XCOUNTRY FLT, WE WERE ADVISED BY OUR CTLR WE WERE 5 NM OFF CTRLINE OF OUR VICTOR AIRWAY, DESPITE OUR CDI ON OUR #2 NAV SHOWING US AS DIRECTLY ON COURSE. CTR ADVISED US OF THE DEV AND WE CHANGED TO OUR #1 NAV WITHOUT FURTHER COURSE DEV. LATER IN THE FLT, AT AN ASSIGNED ALT OF 4000 FT MSL, WE WERE ATTEMPTING TO DETERMINE THE EXACT ERROR IN OUR #2 NAV. DURING THIS TIME, OUR ATTN WAS DIVERTED AND WERE ADVISED BY CTR THAT WE WERE SOME 450 FT ABOVE OUR ASSIGNED ALT. OUT ALTIMETER SHOWED A 250 FT DEV. WE OBTAINED THE LCL ALTIMETER SETTING FROM CTR, CORRECTED OUR ALTDEV, ABORTED OUR ATTEMPTS TO ANALYZE OUR #2 NAV ERROR AND COMPLETED THE FLT WITHOUT FURTHER INCIDENT.

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.