When you're flying an autopilot ILS-approach, and you are at 1500 ft GND and now have to make a GA, can you...

Question

....... press the TO/GA and then immediately switch over to LNAV/VNAV?

Answer 1

Generally, yes.

The autopilot is pretty dumb.  It will do whatever you tell it to do.  Its probably not a good idea to put it into VNAV immediately, but if you press the button it will most likely do it.

Answer 2

As mentioned above many companies select different avionic suites to meet their specifications.

With that said. From what I can remember about the aircraft I flew. I think GA had to arm before you could press TOGA. That happens closer to the ground. (500-800 AGL) If you have an altitude selected in the window and a path with route (the missed approach procedure) it will work. You will have to level the aircraft manually(it goes into control wheel steering, CWS) but it will fly the LNAV. Plus you have to clean up the aircraft(retract flaps 15, positive rate gear up) That's the way ours worked, I think without having it in front of me for review.

Answer 3

Every aircraft is different, and even different specific aircraft of the same make/model could have different avionics.  It sounds like you already answered your own question.  Is this on a computer simulator?  What happened when you tried it?  Does 1500 ft GND refer to 1500 feet above the ground?  Pilots refer to that as AGL, or above ground level.  Is that what you meant?

Answer 4

Fifteen hundref feet? That's not a go around thats a flyby.