This topic is now archived and is closed to further replies.

Richard McDonald Woods

Terminal Control Area (TMA or TCA) entry on approach

Recommended Posts

Help AVSIM continue to serve you!
Please donate today!

Is it true that the entry point to a TCA is always the Initial Approach Fix (IAF)?


Not sure I understand. TCA is a north americanism (TMA or terminal manoeuvring area everywhere else in the world).


Controlled airspace is built up like an upside down wedding cake with a CTZ (control zone) at the bottom, extending up generally around 1,500 agl, a CTA above the CTZ extending to around 3,000ft, then the TMA above that up to the base of class C airspace at FL195.


Since you'll descend from class C into the TMA from above rather than entering laterally it isn't a fixed point; and this will be considerably higher than the IAF.


Additionally, not every approach has an IAF anyway.

Share this post

Link to post
Share on other sites