TAA on GNSS Approach Charts

[yellowgirl]

I have been flicking through the UK AIP and I have noticed that a few airfields now have GNSS approaches.

Can someone explain what the TAA segments are and what TAA means please?

The Waypoints, descent profiles all make sense, but not having GNSS Approaches at my own airfield I am at a loss regarding 'TAA'

Thanks in advance

[Sky blue and black]

CAP773 Chapter 8 may help.

[Gulfstreamaviator]

as above:


url: http://www.caa.co.uk/docs/33/CAP773.pdf



glf

[yellowgirl]

Thanks for the replies, most helpful!

[rennaps]

Basically Terminal Arrival Altitudes in a GNSS approach replace Minimum Sector Altitudes. These TAAs allow descent and entry into the GNSS approach procedure.
The TAAs are based on the Initial and Intermediate way-points and go out to 25nm just like the MSAs.