Narrative:

I was piloting a beech 1900D as captain on a flight to phx. On the arrival into phx navigating according to the coyot two arrival using vors; abq center said we did not make the turn from the 127 degree radial from drk onto the 336 radial into phx VOR. Abq said we were three miles off course and gave us a heading to re-intercept the course. They also asked if we showed on-course and we said 'yes'. According to both of our vors; we were within a half dot of course and correcting. This is well within the VOR airborne accuracy. When I explained this to the controller; he did not believe us and sounded ticked off and annoyed. There were no other airplanes near so there was no reason for him to make such a big deal of the situation. He has a fixed line on his radar screen that shows the exact course over the ground; however; in the aircraft; all we have is the VOR course which is not that exact. Our aircraft are not equipped with GPS or other RNAV and we do not have autopilots so our flight paths naturally do not follow the radar screens as precisely as other airliners.

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Original NASA ASRS Text

Title: Beech 1900 Captain navigating by VOR felt an ATC controller was overly critical of the precision of his navigation.

Narrative: I was piloting a Beech 1900D as Captain on a flight to PHX. On the arrival into PHX navigating according to the COYOT Two Arrival using VORs; ABQ center said we did not make the turn from the 127 degree radial from DRK onto the 336 radial into PHX VOR. ABQ said we were three miles off course and gave us a heading to re-intercept the course. They also asked if we showed on-course and we said 'yes'. According to both of our VORs; we were within a half dot of course and correcting. This is well within the VOR airborne accuracy. When I explained this to the Controller; he did not believe us and sounded ticked off and annoyed. There were no other airplanes near so there was no reason for him to make such a big deal of the situation. He has a fixed line on his radar screen that shows the exact course over the ground; however; in the aircraft; all we have is the VOR course which is not that exact. Our aircraft are not equipped with GPS or other RNAV and we do not have autopilots so our flight paths naturally do not follow the radar screens as precisely as other airliners.

Data retrieved from NASA's ASRS site as of April 2012 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.