Originally Posted by
richpea
It's drilled into us in the sim where I am that ATC have no idea what you're going to do, so if you plan on using the EOSID, make sure you tell them what your plan is in your first radio call once you've got the aircraft sorted out direction and safety wise.
Visit an ATC unit and they will tell you the same thing. When I look through our company ETs just for the type I’m on, there’s sometimes several pages at a given airport with terrain issues. Multiply that by the number of airlines and each type they operate and you’d need a stack of ring binders to document them all.
Some of our ETs are pretty complex and take some time to brief; I sometimes wonder how I would describe in a short time to ATC what we’re doing and what we’re about to do when the workload is high on the flight deck, especially when the ET is referenced to navaids and/or waypoints that are not specific to that aerodrome’s normal approaches and departures. The point of the exercise is your own personal terrain clearance, which can be marginal OEI even if everything goes right, so FNC/ANC makes a lot of sense here as the clear and present danger is hitting the ground, not other aircraft, especially in a ATC and TCAS environment where you are likely below where traffic would normally be.