![]() ![]() Probably a glitch with particular simulated planes. I noted too that the CRS was entered automatically, but in some X-Plane aircraft, people have said that if you don't dial in the CRS, you don't get any RNAV indicators on the PFD and nothing happens. The CLB and DES modes usually work perfectly. ![]() I can post a few screenshots too - I use a Toliss A319 or 321, both 'training level' aircraft which are reputed to be amazingly accurate replicas of the real aircraft (and are, as I noted, certified by Airbus): they have extremely complex systems, including FMC, and should show the same indications as the RW planes. I am going to do a few 'short hops' and see how it goes. This is a combined vertical and horizontal mode, and is displayed across both columns on the FMA. As you capture the descent profile, FINAL APP will arm. As you arm the approach with APPR on the FCU, APP NAV will arm. If you only have VNAV minima, some operators require you to add some padding. If the minima are LNAV/VNAV you can just leave as is. Enter weather data and minima in the PERF APPR page. Select the RNAV or RNP approach in the FM. In summary for the A330, which should be like the A32x: autothrust inop) you can maneuver the aircraft to the capture window with basic modes (HDG and V/S). RNAV approaches can have turns, which is one of their advantages. Note, you don't need to be on runway heading. Once the profile is captured, you'll get FINAL APP active. You initiate by arming the approach with APPR on the FCU (ACP/MCP). You can indeed only engage one autopilot for anything except an ILS. You may not be able to arm the approach on the FCU (MCP/ACP) until the final descent point is the active waypoint. The aircraft should descend automatically, but there are limitations. What indications you get on the FMA vary depending on aircraft.Ĥ. Then again, you don't enter anything in the radio for an ILS either. Oh, and if there's a Garmin GPS rather than an FMC? Similar?ġ. (Is that so?).Īh, well, that's the crux of my question to you guys really: how does the pilot initiate the vertical element of an RNAV approach, once aircraft is on runway heading and FAF is getting close? Does this rely on VNAV (or DES) mode being active? If so, what would be the procedure were VNAV/DES not available for some reason.? With IAN available, the aircraft will descend automatically all the way to the runway. On approach the indicators FAC & GP will turn from white to green as armed changes to active. To enable an RNAV approach you just set it up in the FMC, much as an ILS (and you need to dial in the appropriate CRS too). RNAV approaches rely on internal data, programmed (and pre-programmed) into the FMC, not on external signals from the airportģ. There is of course no G/S as such, as in ILS, so you don't rely on entering any external data into the NAV radio.Ģ. What I do know (though I think that this varies greatly from aircraft to aircraft and even airline to airline (SOP)) is that ( in no particular order):ġ. Can I ask (any answers in terms of not too highly technical a nature, please: I am not a real-world pilot: I have tens of thousands of hours, but in X-Plane! ) how the RNAV is effected on approach.
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