Simviation Forum

Sep 18^th, 2004 at 3:24pm

0o_C.A.B_o0 Offline
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Malta, Europe

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hi everyone,
yesterday i did my first official ILS landing in Malta, after a flight from Thessaloniki, Greece, in a 737-200 Grin

.

I have 2 questions regarding the ILS:

1) How can I identify runways which have the ILS?

2) How should ILS landings be done in crosswinds? Coz yesterday i nearly ended up with half of my main landing gear off the runway! Shocked

hope to get some help soon,

Claude 8)

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Reply #1 - Sep 18^th, 2004 at 3:34pm

Insert Name Here Offline
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I think I can answer the first question. You can identify an ILS runway if you see a green localizer or "arrow" next to the airport. I am new to ILS approaches too and I might be wrong.

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Reply #2 - Sep 18^th, 2004 at 3:55pm

0o_C.A.B_o0 Offline
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Malta, Europe

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thats what i thought too, but i have never managed to intercept the glideslope of rwy14 LMML, and on the GPS this runway has the green arrow marked on it. the instruments didnt even detect a glideslope either.

maybe a defect in the game Roll Eyes

i had downloaded the scenery for this airport so that's what may be wrong. but i had managed to do an ILS landing on the oppisite end of the runway, that is rwy32.

???

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Reply #3 - Sep 18^th, 2004 at 3:56pm

Dan Offline
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The bect way to get all of your frequencies (VOR's, DME's, NDB's ILS etc...) is with FS Navigator... www.fsnavigator.com. It makes finding freq.s headings etc a breeze. As for the crosswind thing... i'm not sure but I would try the wing-down approach, keeping accuratly on the localizer...
Happy flying Dan

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Reply #4 - Sep 18^th, 2004 at 4:02pm

0o_C.A.B_o0 Offline
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aircraft crazy; BEWARE
Malta, Europe

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Quote:

I would try the wing-down approach, keeping accuratly on the localizer...
Happy flying Dan

whats that supposed to mean? keep it simple please lol Tongue

i just added u on msn, Dan, but u arent logged in Roll Eyes

u can answer me there...

thanks Grin

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Reply #5 - Sep 19^th, 2004 at 3:09am

0o_C.A.B_o0 Offline
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Okay, so by ILS landings I mean landings done with the autopilot, that is the approach hold switch...

I thought they meant the same thing Roll Eyes

lol

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Reply #6 - Sep 19^th, 2004 at 9:34am

Nexus Offline
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I answered question 3 in a post I made some months ago

"Well, when conducting an approach in crosswinds, there are 2 techniques which are good to know when landing heavy jets.

The crab crosswind technique

The objective is to maintain wings level thorughout the approach, touchdown and landing roll
On final approach a crab angle is established with wings level to hold the aircraft on the desired course. Application of downwind rudder is started prior to touchdown to eliminate the crab and align the aircraft with the runway centreline.

As rudder is applied, the upwind wing will sweep forward, developing roll. Hold the wings level by application of lateral control into the wind. Touchdown is made with cross control
Note: On very slippery runways, it is wise to maintain the crab angle until you touchdown, this will reduce drift toward downwind side of the runway.

There is also the sideslip technique

The sideslip technique aligns the aircraft with the extended runway centreline. The initial phase of the approach is flown in the crab config to correct the winddrift. Prior to the flare, the AIRCRAFT centreline is aligned on - or parallel to the RUNWAY centreline. Downwind rudder is used to align the longitudinal axis to the desired track as aileron is applied into the wind to prevent drift. A sideslip is established - opposite rudder and low wing into the wind to hold desired course.

You touchdown with the upwind wheels first, shortly followed by the upwind wheels"

hope it helps.

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Reply #7 - Sep 19^th, 2004 at 10:48am

0o_C.A.B_o0 Offline
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aircraft crazy; BEWARE
Malta, Europe

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Nexus, thanks a lot for your info, but what i want to know exactly is how to land properly centred on the runway in a crosswind landing while using the approach hold switch (that is, landing the aircraft with the autopilot) Because apparently the autopilot doesnt know what a crosswind landing is hehehe

I knew the Crab Crosswind technique already but not the Slideslip Technique. Infact i use it when landing an aircraft manually in tough winds... thanks again Wink

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Reply #8 - Sep 20^th, 2004 at 4:55pm

0o_C.A.B_o0 Offline
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Okay, i'll ask the question again.. Roll Eyes

.. is there a way to correct the approach while landing in a crosswind with the autopilot. As i said before... i think the autopilot doesn't know what a crosswind landing is.

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Reply #9 - Sep 20^th, 2004 at 5:45pm

Nexus Offline
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Real world 737 AP's will correct winddrift for crosswinds up to 15kts (compared to 25kts for the heavier 777!)
But the standard FS autopilot is dumber than a plank, so nothing new really. Grin

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Reply #10 - Sep 21^st, 2004 at 3:02am

0o_C.A.B_o0 Offline
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aircraft crazy; BEWARE
Malta, Europe

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OK thanks a lot, that's all i wanted to know Grin

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Reply #11 - Sep 21^st, 2004 at 11:14pm

rog54 Offline
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Regarding the ILS availability and frequency, I generally go to the "Map View" under the "world" pull down menu. There you will see a GPS type map click exactly on the airport you are desiring to find the ILS for. An airport information screen will pop up, go to the bottom using the slide bar and you will see the runways and their associated ILS frequencies. If no frequency is listed that runway is not an ILS approach runway.

You may need to zoom in a bit to properly get the airport and not one of the inner or middle markers.

Roger

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Reply #12 - Sep 22^nd, 2004 at 3:29am

0o_C.A.B_o0 Offline
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aircraft crazy; BEWARE
Malta, Europe

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thanks, but i just discovered that myself yesterday actually, along with the ADF (I never knew there were morse codes in fs2002 hehehe) and the DME. Wink

I can't seem to understand how the DME works tho... can anyone help me? ???

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Reply #13 - Sep 22^nd, 2004 at 7:48am

Nexus Offline
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DME just measures the distance from you and the tuned in beacon (VOR, localizer). Not all VORs are installed with DME capaibilty though. Same goes for localizers, that's when you'll use the marker beacons.

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