ILS problem

[commoner]

thanks for the input lads............and  Fozz. fog and other nasty stuff can come down any old time and leave you short on fuel to get to other airfields which also could be fog bound.......commoner :-/

Hello Comm...

..that's when Faith in the Almighty comes into play... ...!

...unfortunately, for me, he's always holidaying somewhere in the Seychelles when that happens!....

...arse... ...!

Paul...G-BPLF... ...!

Hi Fozz......care to have a look at this post by somebody who APPEARS to know about these things.........the last entry is the one by JVile ..........comments please.....  It's all getting a bit complicated for my old grey cells commoner :-/

http://forums.flightsim.com/vbfs/showth ... p?t=160040

[pepper_airborne]

thanks for the input lads.........but still don't see the reason for having an ILS beam if it's not accurate...hills or no hills :-/  if it's too dangerous don't have it at all IMO...and  Fozz. fog and other nasty stuff can come down any old time and leave you short on fuel to get to other airfields which also could be fog bound.......commoner :-/

...Oh and FS9 doesn't seem to have ILS at PAJN or VHHX.

Oh sorry about that, PAJN is included in the glacier bay scenery, it has a similair construction too the one at VHHX, wich is kai Tak, the new 9dragons scenery represents it very well.

By using a ILS a airliner can still safely get near the runway, then being further guided by approach lights that follow the turn. Offcourse it aint the best type of approach, but its better then going down VFR in a 737 when the visibility is minimum.

[Fozzer]

thanks for the input lads............and  Fozz. fog and other nasty stuff can come down any old time and leave you short on fuel to get to other airfields which also could be fog bound.......commoner :-/

Hello Comm...

..that's when Faith in the Almighty comes into play... ...!

...unfortunately, for me, he's always holidaying somewhere in the Seychelles when that happens!....

...arse... ...!

Paul...G-BPLF... ...!

Hi Fozz......care to have a look at this post by somebody who APPEARS to know about these things.........the last entry is the one by JVile ..........comments please.....  It's all getting a bit complicated for my old grey cells commoner :-/

http://forums.flightsim.com/vbfs/showth ... p?t=160040

Hello Comm.......

Having spent the past 10+ years Sim-chuffing around California, I have become familiar with various "offset" Glidescopes, (RWY 16R Sacramento, etc.), whilst flying my GA Piston Props, using my Bendix-King radio stack on autopilot....and FS Navigator to show the Glidescope positions and Frequencies.
...and I still switch off my Auto-Pilot before approaching the Threshold to make a safe landing on the centre line...

Sometimes, I have very little faith in "Electronictrickery"!.... ... ...!


Paul...G-BPLF.... 8-)...!

[simonmd]

Just to be pedantic, an 'ILS' beam that is deliberately offset due to local terrain, etc. like KaiTak for example, is not called an ILS at all but it's an IGS (Instrument Guidence System) as you would not be able to use such a system to actualy land, just get you to a visual final.

[Allen_Z]

if the plane is blown a bit off the ILS localiser then wouldn't the autopilot compensate

Too slow, particularly in a large aircraft, particularly in variable wind conditions, such as thunderstorms in the vacinity

[simonmd]

Factors such as stong crosswinds would be compnsated for by a decent AP. An airliner can still follow an ILS beam in these conditions, it just means approaching the runway 'sideways' requiring a large rudder input just before TD to straighten up.

[Allen_Z]

variable

On any summer afternoon, 14:00 to 17:00 MDT, dial up real wx at DIA, and you will see VARIABLE  :)

wind shear is a VARIABLE wind, and you better have yer hand on the controls

[commoner]

...mm...one says AP can handle winds ...t'other says no it can't....now it's not called ILS but summat else..........we have the Localizer Type Directional Aid (LDA) and the Simplified Directional Facility (SDF) approach...then now there's PRM approach...oh dear...I think I'll have a lie down for a bit and leave it to the experts.......commoner

[Brett_Henderson]

Wanna get really confused ?

[Allen_Z]

I think I'll have a lie down for a bit

me too  :)

[pepper_airborne]

Wanna get really confused ?  Check out the, LOC-DME E  for Aspen, CO..

It uses a localizer that's not even at the field, nor aligned with any runway..  you fly it BACKWARDS after a missed approach  


And.. there's a localizer/glideslope at an airport in Europe ( I forget which one) that guides you into a valley just close enough to enter a pattern on  the downwind leg  ::)

Wasnt that innsbruck? So that you dont smash your plane into the canyon walls??

[commoner]

..GAWD knows what Andrea thinks to all of us crazy lot here... first post and look where it got him....probably gone for a lie down

[Nav]

Andrea, some ILS systems aren't aligned with the runway - adds to the fun. But more probably the sim is aiming off, 'crabbing,' to allow for wind. Unlike trains, aeroplanes don't always go where they're pointed (or, more accurately, 'point where they're going').

Also bear in mind that the ILS systems will NOT land you - only keep you roughly lined up until you are close in and can take manual control.

This is a long read, but it'll tell you most things about ILS approaches and landings (including a bit about allowing for wind):-

http://www.simviation.com/cgi-bin/yabb2/YaBB.pl?board=COF;action=display;num=1111322151

And if you have the stamina this will tell you quite a bit more about manual crosswind landings:-

http://www.simviation.com/cgi-bin/yabb2/YaBB.pl?board=COF;action=display;num=1129643666

[EciMeN]

I thank you all for your help    :)