On Oct 9, 8:22 am, (Paul Tomblin) wrote:
In a previous article, "Dan Luke" said:

You are coming from northeast of SFB. ATC says "Cleared direct UDUZI,
maintain 4000' until established, cleared RNAV 9L approach."

http://www.naco.faa.gov/d-tpp/0710/00917R9L.PDF

When do you descend below 4,000 and to what altitude?

Good question. What does "established" mean on GPS approach?

As soon as you are on a charted segment of the approach as depicted.

-Robert, CFII