I was doing a flight from KMFR to KBFI with RC4. My first course was north 340 deg. After a while I was told that I was of course and was directed to turn back south 170 deg. After that I was given new vectors making a circle back to my course. And at each of these vectors I was told the first time I was given them that it was not the first time I was of course.

I've had this happen to me as well, and discovered the cause. If you have an initial leg that is very short - say the airfield to an on-field VOR, and don't actually fly that leg, but skip to the next leg (KATL - ATL - noone is an example), the ATC controller feels that you have missed a leg and are off course. You will be directed back until you fly that first leg to his/her satisfaction - simply fly back (not forgetting to reset the gps leg) and all should be well.DJ

>I've had this happen to me as well, and discovered the cause.> If you have an initial leg that is very short - say the>airfield to an on-field VOR, and don't actually fly that leg,>but skip to the next leg (KATL - ATL - noone is an example),>the ATC controller feels that you have missed a leg and are>off course. You will be directed back until you fly that>first leg to his/her satisfaction - simply fly back (not>forgetting to reset the gps leg) and all should be well.>>DJOr better still, request direct to the next way-point, after you have been requested to to your 180 turn to get back on course (don't do the turn, just ask for the direct)

Good thought - I'll try that one of these days, I'm sure... :) DJ

or get rid of the first checkpoint if you're not intending to fly a departure procedurejd

Req Dir CP is available in Center airspace only, keep that in mind. As John said, the best way is to not include the on-the-field checkpoints in the front end. Merge to your airway with an intersection down the road, selecting DP w/Alt restr. You'll sim the same thing that way.