This is somewhat embarrassing, but while preflighting the FMC in the 737, I entered a wrong fix. No big deal, I'll just delete it and continue with the programming. Wrong. It wouldn't let me. INVALID DELETE I kept getting. I soon discovered you can't delete the top fix, only those below. No matter what I tried, I could not delete that one remaining fix at the top. I thought I could delete the flightplan and restart from scratch and begin all over, but I could not seem to get a fresh start. I shut down FS and restarted the whole thing. Is there a trick to canceling a flight plan to start over?? Thanks. Tom

If you reenter the from/to airports on the INIT page, it should clear the plan. - jason

Thanks Jason. I figured it probably would be something as simple as that.:-) Regards, Tom