How come every time & select an arrival runway, I get the route discontinuity message on the FMC? I know how to get out of the DISCO, but I don't understand why it is even there in the first place. I also get all these other things inserted too - like a hold pattern that I never asked for, etc. Then I usually have to start deleting all these extra insertions in the Route page of the FMC. Before I upgraded to the second (& now the latest version) of the 737, I never had this - the original version never had this. I read the manual, especially in regards to the chapter on the FMC & I can't seem to find out why all these other things get added every time I select an arrival runway. Any thoughts? Am I doing something wrong? Is this supposed to happen? I just want the runway to be added in the list of legs in the correct place on the list. How should I correct this each time? Any thoughts?Thanks.Chris Catalano

>How come every time & select an arrival runway, I get the>route discontinuity message on the FMC? I know how to get out>of the DISCO, but I don't understand why it is even there in>the first place. I also get all these other things inserted>too - like a hold pattern that I never asked for, etc. Then I>usually have to start deleting all these extra insertions in>the Route page of the FMC. Before I upgraded to the second (&>now the latest version) of the 737, I never had this - the>original version never had this. I read the manual,>especially in regards to the chapter on the FMC & I can't seem>to find out why all these other things get added every time I>select an arrival runway. Any thoughts? Am I doing something>wrong? Is this supposed to happen? I just want the runway to>be added in the list of legs in the correct place on the list.> How should I correct this each time? Any thoughts?>>Thanks.>Chris CatalanoThis is normal... the FMC now correctly inserts a DISCO whenever you tack something on to your flight plan (like a runway/runway extension or an approach) that doesn't have a waypoint in common with your existing plan.It also adds disco's when under certain other conditions (like planning from waypoint a to b to a or some very sharp turns/reversals). I can't remember them all at the moment.But now that it works the way it's supposed to, you have to close all the discos.

Thanks Tim. Do you know why it also adds these holding patterns that I don't ask for whenever I choose an ILS approach? They just seem to magically appear. Are they supposed to be there too?Thanks again.Chris Catalano

Chris when you select an approach ,the Missed approach procedures(MAP) are also included in the star. This would be the holding pattern you see. And yes they are supposed to be there. They are the same ones displayed on terminal procedures charts.

Here's a terminal procedure chart for Portsmouth NH, notice the MAP is drawn as a holding point (IDEED),maybe that should read IDEED,IDEED.http://forums.avsim.net/user_files/65099.jpg

Just to clarify, there are 2 DISCONS with a RWY EXT, .....Poor Anthony was bugged to death by me over this point hehehehe. [h4]Best Wishes,Randy J. Smithhttp://www.precisionmanuals.com/images/forum/betaimg.jpg