tobbe490 Posted February 12, 2015 Report Posted February 12, 2015 I am a beginner and flying Boing 777 professional (not so easy for me). I have landed with ILS before and suceeded a several times, but no more. What am I doing wrong? Is it crucial to have the exact altitude when nearing the ILS "beam"? I understand that I must not have an higher altitude but can I go lower? As an example I want to fly to Hamburg (EDDH). At "OM23" my FMC says that I shall have an altitude of 1340 ft. Have I understand this correct? And what does 1340A mean? Quote
eMko Posted February 12, 2015 Report Posted February 12, 2015 Hello, generally you should catch the glideslope from below. http://nav.vatsim-germany.org/files/edww/charts/eddh/public/EDDH_IAC_ILS_RWY23.pdf I don't know if the chart is current or not (it's a first hit on google), but for reference it should be OK. You should be at 3000ft when approaching PISAS, catch the glideslope on PISAS and start a final descend. OM23 is outer marker and yes, according to the chart, the altitude is correct. EDDH23 1340A means you should be above 1340 ft over that point (1340B would mean you should be below). Don't know why it's there. Basically it's a good idea IMHO to catch the glideslope over PISAS and set autopilot to follow the ILS, not FMC. 1 Quote
SwissCyul Posted February 12, 2015 Report Posted February 12, 2015 When you have your flight plan set up correctly, you shouldn't have to worry about when to start your descend!! If you have VNAV activated (you should have it on...) and you are nearing the T/D marking on the ND display, the plane should start descending automatically!! VNAV follows the exact altitudes that are given in the FMC. So if says e.g. at "LBE" FL085, the 777 will be at that level if you leave the autopilot working by itself!! Before you descend you only have to set up the altitude you don't want to be under, so in this approach it would be 3000ft. So you set the autopilot altitude on your MCP to "3000". When you reach "PISAS", you will probably see the ILS markings on your PFD, if they are there, hit APP and the 777 will catch the glide slope and the localizer. Then you can continue on your ILS APP without any problems 1 Quote
tobbe490 Posted February 12, 2015 Author Report Posted February 12, 2015 Now I am getting somewhere! The aircraft descends as you said. But ... still no ILS landing. I hit the APP as you said when I saw the ILS markings but no reaction . It stayed on the altitude of 3.000 ft. It was cloudy and I did not see the runway otherwise I could have tried to land manually.I will try another route and see what happens.If one can fly completely automatically (but I like it) what shall a pilot do? Playing cards ? Quote
mmerelles Posted February 12, 2015 Report Posted February 12, 2015 As long as i understand, on todays modern jetliners the pilots just do the takeoff and land by hand, that's it, a few minutes hand flying per trip, the computers do the rest on a normal flight. But they are responsible for all the programming and manage any unexpected situation due to failures or flight plan changes (weather, traffic, etc). As others mentioned, as per your FMC, you should be at 3000 feet while intercepting the ILS. Could you please screen capture -NAV RAD- FMC display while there? ILS should be configured there in PARK mode and change automatically to active. Maybe the whole front panel screen capture will be great as well to understand your aircraft configuration and screens information while you are on top PISAS Also watch your speed, the aircraft will not be able to stabilize properly on the ILS if you are coming too hot, you are changing heading 076 to 229 PISAS to OM23 1 Quote
tobbe490 Posted February 12, 2015 Author Report Posted February 12, 2015 I will answer you tomorrow. Thank you for your reply! Quote
SwissCyul Posted February 12, 2015 Report Posted February 12, 2015 As mmerelles said, sent us some screenshots to see whats happening And there is a lot to do over the clouds, like watching the sunset or taking pictures of interesting areas. You never get bored up there (in real life...)!! Quote
tobbe490 Posted February 13, 2015 Author Report Posted February 13, 2015 Hallo, I flew from Kastrup (EKCH) to Hamburg (EDDH) and programmed the FMC accordingly. When I am about 8 NM from the airstrip (15) my cockpit looks like this: I was little off course when I made the screenshot but this will adjust later. But the ILS does not work! . The plane stayed on the same altitude. I hit APP when I reached DEVOD. I would be less nervous and enjoy the skies if I know how to land safely Quote
SwissCyul Posted February 13, 2015 Report Posted February 13, 2015 Well, you are way to high at the time of the screenshot... Seems that either the FMS is wrong with the altitude constraint of 3000 at Devod, or you did something else wrong... As I can see in the screenshot, you have VNAV still engaged. Where was the GS indicator the moment you reached Devod? 1 Quote
mmerelles Posted February 13, 2015 Report Posted February 13, 2015 (edited) The ILS is there and tuned properly, the plane is following the localizer (horizontal guidance) but it is unable to follow the glideslope (vertical guidance), problem is by the time the ILS comes alive you are higher than expected and the plane will not dive nose down to catch up the GS, it is necessary you are -at the right altitude or below- for the plane to pickup the GS diamond and start descending. The picture has low quality for zooming in, is your altimeter 3X.XX ?? seems too high for that weather, did you set it properly at transition level? this may cause your being too high all path down I can not see what happened before DEVOD but seems you were coming too fast and the FMC will be unable to put the aircraft at the right altitude in time. I would suggest trying this flight again and a lot before DEVOD watch your speed and apply one notch of speed brakes for the FMC being able to command the aircraft nose down enough to reach the target altitude. Once you are at the right speed/altitude you retract the speed brakes. PS: you are also experiencing fuel leak, you may experience other severe failures as well. Since you are learning this aicraft i strongly recommend you disabling CUSTOM FAILURES on the 777 MENU before initiating your flights which may add more problems to the combo. Let us know how this tips perform and we will move from there Edited February 13, 2015 by mmerelles 1 Quote
tobbe490 Posted February 13, 2015 Author Report Posted February 13, 2015 Hallo, Thank you for your answers! They are very helpful. I will try everything you have said and come back to you! The best with X-plane, I think, is that there are always something new to learn - you never get tired! Quote
tobbe490 Posted February 13, 2015 Author Report Posted February 13, 2015 P.S. The altimeter shows 3.020 ft. Quote
mmerelles Posted February 13, 2015 Report Posted February 13, 2015 (edited) P.S. The altimeter shows 3.020 ft. I meant the ALT SETTING the "green number" below your current altitude vertical grey bar. It is highly important to set your reference altimeter properly to current weather conditions for an accurate altitude Edited February 13, 2015 by mmerelles Quote
tobbe490 Posted February 13, 2015 Author Report Posted February 13, 2015 The Alt setting shows 29.92. This is news for me. How do you change that? If it is too complicated to explain - then I will try to find the answer in the manual! Quote
mmerelles Posted February 13, 2015 Report Posted February 13, 2015 (edited) That is you altimeter pressue reference, the higher the value you put there the higher that your aircraft altitude would read and vicebersa. It it highly important that the altimeter reference is set properly before takeoff and before landing, otherwise your aircraft will read an incorrect altitude. To know what value you should set there, tune the airport ATIS weather report. 29.92 is the standard altimeter reference. To change that value rotate the BARO knob to the right (increase) or to the left (decrease). The BARO knob is located on the MCP panel, just a side to the left of the A/P button. This is a double action knob. If you rotate the back part of the knob you set the units HPA (hectopascal) or IN (inches millibars) reading, leave it inches XX.XX. If you rotate the front part of the knob you change the pressure reference. Set it to your current weather conditions (ATIS report). Just to understand how it works, having your airplane sitting on the parking area. Increase or Decrease the altitude reference, and watch how your aircraft altitude increases or decreases. You will see there how incorrect your altitude could be and the plane is not even moving at all. Edited February 13, 2015 by mmerelles 1 Quote
SwissCyul Posted February 13, 2015 Report Posted February 13, 2015 Oh, i thought you had some basic knowledge... Well, no wonder that your flights are not going to well I hope you know enough now to complete a flight!! 1 Quote
tobbe490 Posted February 14, 2015 Author Report Posted February 14, 2015 I will learn! Now I am planning to order a lesson in a real flightsimulator, Boing 737NG (it cost a lot but I think it´s worth it). 2 Quote
tobbe490 Posted February 15, 2015 Author Report Posted February 15, 2015 Hallo, I finally suceeded! (thanks to your information)! It was no problems at all. One more question. How can I tune in the radio to listen to ATIS for example? I try to set a frequency of 121,62 but the only thing I can set is 121,65? Quote
SwissCyul Posted February 15, 2015 Report Posted February 15, 2015 You go on the "NAV RAD" page and type it in. But I think the 777 doesn't support those frequencies... 1 Quote
mmerelles Posted February 15, 2015 Report Posted February 15, 2015 set the frequency on the LEFT RADIO main pedestal, try higher or lower .60 or .65, it should work. Be sure you activate left mic or you won't hear nothing (below the on/off radio button) I suggest you sitting your aircraft on another airport with an standard atis frequency, so you are sure you are activating the radio properly. 1 Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.