A terrain warning into Zurich
Warnings are a different animal. Depending on your FMS manufacturer, and version, the settings are different. At the FAF, some default to 500' ROC, while others default to a 400'ROC. This tapers down to the 200' min, which btw, is at threshold (dont kill the messenger) Note the OCS surface intercept point.
So, with that in mind...depending on the terrain in that area, you may get a warning on one ac, while not another. There is the precipitous terrain algorithm the FMS looks at as well, with the scan rate and differences between scans.
IF there is a turn to final, the OCS surface is artificially lowered as well, and you may get even more warnings...
