757 Systems - Autoflight

Question 1

What is different about the way the HDG HOLD and ALT HOLD buttons operate?

Answer 1

When pushed, the ALT HOLD returns the plane back to the altitude the button was pushed, while the HDG HOLD just rolls wings level and otherwise ignores what HDG the buttons was selected at.

Question 2

At what altitude does the auto flight system perform its pre-Autoland test?

Answer 2

1500 RA