May 3, 201016 yr Hi all,As you see from the title, I have a problem with ILS landings! I'm new to ILS landinga so I want an opinion on my problem. I know how to do a ILS landing, I've read/watched all the tutorials on how to ILS land and stuff, but I still have a problem. Ok, the problem is that when I get to the glideslope or localizer area ,and have already actuvated NAV1, I now activate Approach on the AP( I know how to use APs in FS), and instead of my plane aligning, my plane jerks unusually up and eventually stalls and collapses to the ground. My other problem with the ILS landings is that sometimes ATC tell me to descend(for example) from FL180 to 6000ft. I go ahead and do that and wait for further instructions. And for awhile nobody says anything and then suddenly I reallize I'm 6000 ft above my destination airport, which is not elevated at that height! :( I always very alert when I land and fly, so I think its my misinterpretation or anything. I need help fast!!! Please help! Thanx in advance.P.S.- I have also practiced landings more than 10 times using ILS, which 1-2 of 10 were succsessful and were with turboprops.-NDoynov
May 3, 201016 yr What are the localizer and glideslope needles doing?Where are you relative to the airport?Are you close to the localizer and under the glideslope?Is the autopilot still in GPS mode?What if you first engage altitude hold before you switch from nav to approach?What are you doing with the throttle? Is autothrottle engaged?
May 3, 201016 yr This is very weird behavior. What plane are you using to do the approach, and at what airport does this specifically happen? I too have had problems with ATC, being always too late with giving commands and such and so I sometimes opt out of the vectors and simply do it all myself. However, I never heard of the plane jerking and stalling when activating APP mode. It sounds a bit as if you are too low and flying far too slow, so the A/P will try to get the glideslope by flying upward, but if the A/P does this suddenly, the engine smight not have spooled up to keep the speed from going down, and once they do, it's too late: you're stalling.So, what is your speed when you do this landing? Is A/T engaged, and if so, at what speed should it hold? Benjamin van Soldt Windows 10 64bit - i5-8600k @ 4.7GHz - ASRock Fatality K6 Z370 - EVGA GTX1070 SC 8GB VRAM - 16GB Corsair Vengeance LPX @ 3200MHz - Samsung 960 Evo SSD M.2 NVMe 500GB - 2x Samsung 860 Evo SSD 1TB (P3Dv4/5 drive) - Seagate Barracuda 2TB 7200RPM - Seasonic FocusPlus Gold 750W - Noctua DH-15S - Fractal Design Focus G (White) Case
May 3, 201016 yr Author To jeroen79:I'm not sure I've looked at the glideslope needles before. I'm right at the point where the OM( outer marker) and the start of the green polygon is where I activate APP. The autopilot may been on GPS, and i do realize that I should have put it to NAV. I don't usually don't do anything with the NAV controls in the autopilot, and I figured that it wasn't necessary, since it wasn't in the tutorial. Usually my speed at that time is about 200-250 knots,but I would reduce to 140 (depends on conditions and aicraft) KIAS and lower flaps to final stages. Autothrottle is engaged, yes. To Thralni: The aircraft I use varies from Beech 1900D to a full-blown Ilyushin IL-96. It depends. Last time experienced this was at London Heathrow, but the airports's ILS system doesn't seem to be a problem. I don't fly slow ( as you see above) I always check the checklist procedures and play by them. -NDoynov
May 3, 201016 yr If you are at 6000 ft (?) over the outer marker then you will likely be way above the glideslope and it will drop more and more as you fly towards the runway.Also, the MSFS autopilot doesn't like intercepting the glideslope from above. You should fly under it so that the glideslope needles will move down.Try several approaches and see when the problem occurs.You can use the map to place the aircraft at any altitude and position you like.Carefully observe what the aircraft, throttles, instruments, etc are doing.How much planning do you do before flying?Finding yourself at 6000 ft over the airport can be prevented by tracking your position and planning your descent.
May 4, 201016 yr Here's a drawing I did of what you basically should be doing. This is not a complete guide, and the figures are off the top of my head, but should be good enough. Try it, and if it still proves difficult, post in here again and I'm sure we will be able to figure out what is going wrong.Al Alan Bradbury Check out my youtube flight sim videos: Here
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