Archived

This topic is now archived and is closed to further replies.

boing71234567

PMDG 747 X FMC question

Recommended Posts

hi again, i was flying an autoland approach and i saw that when i was choosing the runway to land on you have to type in something for were it says VFR APPR. usually i type in 15 but when i do that and i auctally preform the autoland i usually land in the middle and sometimes towards the end of the runway. what is VFR APPR and what should i type in to fix this? or what do you usually type in?-thank you

Share this post


Link to post
Share on other sites
Help AVSIM continue to serve you!
Please donate today!

hi again, i was flying an autoland approach and i saw that when i was choosing the runway to land on you have to type in something for were it says VFR APPR. usually i type in 15 but when i do that and i auctally preform the autoland i usually land in the middle and sometimes towards the end of the runway. what is VFR APPR and what should i type in to fix this? or what do you usually type in?-thank you
The FMC is asking you to enter a fictional waypoint (Runway Extension) aligned with the runway, at a chosen distance (let's say 15 miles) when you don't choose any of the other standard procedures (VOR, VOR-LOC, ILS, etc) that you may have available in the ARRivals/DEPartures page of the FMC.

Share this post


Link to post
Share on other sites

Now, that's a wonderful tool avilable in the 737 and 747.Say you do not have an ILS for the runway you want to land on.For a standard GlideSlope of 3

Share this post


Link to post
Share on other sites

Hi,Yes this feature is used for runways that for what ever reason do not have an instrument aproach to provide latteral(LNAV) and vertical guidance(VPI vertical path indicator on the ND manually chased using VS or aoutomatic using VNAV) The VFR APPR sets up an 8nm waypoint at 2000ft aal and has a short fly level section before intercepting the "glide". the rwy ext allows you to enter a disance and FPA flight path angle of your choice.A typical real world use of this feature would be rny 07 at KLAS,although adoption of GPS approaches flown using LNAV and VNAV are becomming more common and are replacing the need to fly a VFR APPR.As a last resort you can of course just look out the window!CheersJon Bunting

Share this post


Link to post
Share on other sites
Don't overlook the ILS that exists on both 6/24 at KBDL.
when you say runway extension and i typed in 15 would that mean "from here" on the picture "to here" on the picture? like from the beginning of the runway to 15 feet after the line were the arrows end.

Share this post


Link to post
Share on other sites

Of course not !! :( Not 15 feet !! It is from the runway threshold to a point (aligned with the runway) 15 miles away.

Share this post


Link to post
Share on other sites
when you say runway extension and i typed in 15 would that mean "from here" on the picture "to here" on the picture? like from the beginning of the runway to 15 feet after the line were the arrows end.
It's for visual reference when you're not using any ILS or VOR's, you'll get a line extending out from the runway on your ND. Makes it easier to line up and calculate the descent properly.

Share this post


Link to post
Share on other sites

I like putting it either 3 or 5 nm out (15 is a bit far for my taste). At 3 nm you should be about 1000 ft agl or at 5 about 1500 agl to yield a 3 deg descent path. Of course, you should be configured for landing before getting this close in (or not later than 1000 agl).

Share this post


Link to post
Share on other sites
I like putting it either 3 or 5 nm out (15 is a bit far for my taste). At 3 nm you should be about 1000 ft agl or at 5 about 1500 agl to yield a 3 deg descent path. Of course, you should be configured for landing before getting this close in (or not later than 1000 agl).
thats probley why i land sooo late, i will try 5.

Share this post


Link to post
Share on other sites