Hello -
It looks like the last AIRAC cycle does not have all of the updated SID/STARS in the MCDU or in general - SimBrief also show the current AIRAC of 2104…
SID COWBY6 is now longer active
I also believe SHEAD is still showing as active and is not
I do realize that they were removed - but when I run simbrief as well as the FMS, I still get COWBY8 and SHEAD1…they just overhauled the airspace here in Vegas.
Okay, so it looks like I fixed my FMS problem…but it looks like the issue is with Simbrief not pulling the updated SID/STARs even tho - it shows AIRAC 2104
In Simbrief, if you have AIRAC 2104 set as active and flight plans with COWBY8 or SHEAD1 being prompted or accepted in Analyze Route with out error, please report at Simbrief forum