Hi,
the MSFS stock scenery for KBWI is outdated - there is a missing runway 15R/33L
Here the current airport diagram from the FAA:
The data are all included for KBWI but the logic in the MSFS disables it, when terminal procedures can´t be assigned to a runway - in this case, there are some terminal procedures for 15R/33L but the runway doesn´t exist in the MSFS scenery - and therefore no SIDs, no STARs.
Here the runways from the MSFS scenery - 15R/33L is missing:
Please report this to ASOBO/MS, that´s no navdata issue. You can also install a 3rd party scenery, which has the missing runway included and you will immediately see the SIDs/STARs without any update from our side because they are still included.
Here, when you install a 3rd party scenery - all runways are present:
SIDs:
STARs:
IAPs:
So, no navdata issue - more a MSFS stock scenery issue due the missing runway. This issue exists since day 1 but no improvement from ASOBO/MS, sorry.
Hope that helps,
Richard