Originally posted by: Cutthroat
The easy way, follow the controllers instructions for vectors to final and tune nav1 and nav2 to the ILS frequency. Use the autopilot to descend to your assigned altitude, approach the ILS from below, make sure the nav/gps switch is set to nav. When you see the needle on your MFD move press the 'APR' autopilot setting. Now your airplane will follow the glide slope right to the runway, you just need to deal with your flaps, gear, spoilers, airspeed, etc. At 100ft AGL turn off the autopilot and land the plane.
OK, here's what I did on a very short flight to try the above (737-800):
1. prior to take off I looked at the map for the airport I was to land in, and checked for ILS frequencies and heading.
2. I set nav1 to the ILS frequency and turn it on (on the radio panel)
3. I set the heading for the ILS (not the main one, but the other - I forgot its name)
4. took off, followed controller instructions, got within 25 miles of the destination.
5. I looked for needles moving on the MFD, but there were no needles there appearing nor moving.
6. After banging my head a little trying to understand why the hell it doesn't work, then I looked at the backup altimeter thing, and when I played with one of its buttons, all of a sudden two yellow parallel lines appeared. I figured that's my ILS thing...
7. Upon getting closer to the destination, the horizontal line started moving, I figured indicating I was in the wrong altitude. When that happened, I realized ILS is working, and I pushed the APP button.
8. From here on it all went wrong, while the horizontal line moved, the vertical line stayed put at the left hand side, the APP button didn't seem to do the job I thought it supposed to.
9. Bottom line, I did manage to align correctly with the runway, but over shot it...
What am I doing wrong?
Edit: nav/gps button was set to nav