Autopilot landing

[Billbixby]

Hello all,

I had a couple of quick questions regarding autopilot landings. So I know which things to turn on from watching Youtube videos.. but I've noticed that my plane will not react properly. I tune the ILS on the NAV and then set it from GPS to NAV. The plane will do something like pitch all the way up and go back to 5000 from 3000 and fly past the airport and things like that. My questions are... all I need to do is: a.) tune the ILS frequency b.) be at around 3000 feet when approaching the "feather" (green lines)c.) control the airspeed with autothrottle on or off d.) extend flaps and landing gear e.) change from GPS to NAV. That should be it right? Not necessarily in that order though....If so why does the plane continue to fly past the airport and do weird things?? Any help would be appreciated. Happy Fourth of July everyone. I'm at work but I have tomorrow off

[Schedule]

Have you selected approach mode (APR) on the autopilot?

[mrzippy]

Should I assume you are not using ATC? ILS freq. tuned in on Nav1 Radio.. sound turned on so you can hear the identifier? How close to landing are you? APP light on autopilot on? picking up the ILS usually happens around 2500 feet and 8-10 miles out. Correct having the GPS/NAV switch in Nav position. If the ILS is picked up correctly your autopilot heading light should turn off and the APP light stays on and the plane should start turning towards the runway. Once lined up you can turn off altitude hold and press ctrl o and let the autopilot hold the heading and you control altitude and speed while landing. Should be a centerline landing every time! Hope you get holiday pay!

[mith]

Have you selected approach mode (APR) on the autopilot?

I'm going to second the above. I used to have horrible problems passing the runway. I just couldn't figure out what was going on. I fly corenado's Skymaster (Push/me Pull/me) so it may be a tad different as far as what our gauges are.

You are pretty accurate as to how you're doing it. Assuming you have your ILS frequency right, assuming you're on Nav 1 AND your setting your panel SET on Nav 1 and not Nav 2 you're on the right track. Also, my GPS/NAV are all one unit, so I ALSO have to make sure that when I get locked onto the localizer (hear the beeping), I have to change my GPS to "Nav" mode. I always give it a couple miles before I engage the Nav1 after hearing the localizer. THEN I switch to the nav mode. About 15 miles out, I change to the apr mode (My gauge says "VOR/LOC) which I guess is the same as the apr button (at least this is how I do it and I get it 100% of the time.

So, other than the above, you're pretty close to getting it right. If all of the above is in use, then i'm going to guess you'll hit your mark!

[krudawg]

Here's how I do it in the 757:

1. Tune the Localizer, check the ident (morse code for the fix)
2. Arm the Approach by pressing the GS button located on the MCP far right side andpush ALL three left, center right autopilot buttons)
3 Turn to intercept the LOC
4 make sure your authrottles are on
5 make sure you are showing alt hold on you EADI

Sit back, peel your bannana and feed the Co-pilot because the rest will be taken care of by Boeing