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jstorey20

Approach Problem

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hi everyone

can any simmers out there possibly help me with a problem with my 777 with sp1

i plan my flight pfpx

set everything up in fmc datalink working great configure take off and landings with topcat

set autoland ils approach on runway

when close to airport 20 miles or so LOC armed everything ok

click on APP when about 10 miles or so from runway  about 1 time in 5 or 6 attempts lands perfect

but more often than not engines spool up and i cant bring 777 down just flies over runway and climbs

read tutorials tried different airports different distances even bringing down with vs manually nothing works

can anybody tell where i am going wrong

pulling whats left of my hair out

thanks

jeff storey

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more often than not engines spool up and i cant bring 777 down just flies over runway

 

I have experienced this sometime and believe it's b/c some airports ILS capture GS before 7 NM, but my aircraft did not descend to the assign altitude in time.

 

Just my 2 cents.

 

Regards, Harry

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Thanks Harry for reply

I usually use vertical decent manually to get down to approach level then

When I press app button it usually starts to climb and manual vertical descent then does nothing

Thanks Harry for reply

I usually use vertical decent manually to get down to approach level then

When I press app button it usually starts to climb and manual vertical descent then does nothing

Are you sure you don't press the TOGA button?

Are you sure you don't press the TOGA button?

No I don't touch toga but thanks for reply

Jeff

No mate don't touch toga

But thanks for asking

Jeff

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Check your throttle override settings in the FMC. Do you have them in Hold mode, if so make sure you pull the throttle controls back otherwise the engines will spool up and you won't land. Try setting it to off and then give it another try.

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yes I would say either a throttle override setting in the FMC or the AP is not engaged, lol.

 

Does your PFD show

IDLE......ROLLOUT.......FLARE

during the landing flare?

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Check your throttle override settings in the FMC. Do you have them in Hold mode, if so make sure you pull the throttle controls back otherwise the engines will spool up and you won't land.

yes I would say either a throttle override setting in the FMC

 

This would be my bet.

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Check your throttle override settings in the FMC. Do you have them in Hold mode, if so make sure you pull the throttle controls back otherwise the engines will spool up and you won't land. Try setting it to off and then give it another try.

 

I'm pretty sure the 777 in APP mode with LOC and G/S captured does not go in HOLD mode. So you must've done something wrong during the approach. Can you confirm this happens when in APP mode? 

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Check your throttle override settings in the FMC. Do you have them in Hold mode, if so make sure you pull the throttle controls back otherwise the engines will spool up and you won't land. Try setting it to off and then give it another try.

I will try that voodoo101

Thanks for reply

I'm pretty sure the 777 in APP mode with LOC and G/S captured does not go in HOLD mode. So you must've done something wrong during the approach. Can you confirm this happens when in APP mode?

Yes it seems to be a problem after pressing app

With Loc captured

yes I would say either a throttle override setting in the FMC or the AP is not engaged, lol.

 

Does your PFD show

IDLE......ROLLOUT.......FLARE

during the landing flare?

yes I would say either a throttle override setting in the FMC or the AP is not engaged, lol.

 

Does your PFD show

IDLE......ROLLOUT.......FLARE

during the landing flare?

No the PDF does not show flare or roll out

This would be my bet.

Thanks scandinavian13 for reply will check fmc settings

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Yes it seems to be a problem after pressing app
With Loc captured

 

But is the G/S captured? If you're on LOC but still descending on f.i. V/S or FL CH, you still can get the autothrottle go into HOLD mode with G/S armed.

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No the PDF does not show flare or roll out

Ok then that is your problem.

 

without those indication an autoland will not take place.

You are either not flying with the AP engaged or you are not in APP mode (loc and GS captured) but in something like loc + vs.

 

look at page 4-20-15 of PMDG777-FCOMv2.PDF for a picture of what you should see on the PFD once below 1500ft!

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I usually use vertical decent manually to get down to approach level

 

+1  I gradually slow the aircraft on descent and sometimes have to do a small loop near the G/S to get to the approach altitude.

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Ok then that is your problem.

 

without those indication an autoland will not take place.

You are either not flying with the AP engaged or you are not in APP mode (loc and GS captured) but in something like loc + vs.

 

look at page 4-20-15 of PMDG777-FCOMv2.PDF for a picture of what you should see on the PFD once below 1500ft!

thanks for this  AP engaged APP engaged but does not capture tried various settings in fmc

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thanks for this  AP engaged APP engaged but does not capture tried various settings in fmc

I do not think there are any settings for this in the FMC.

 

Autoland works regardless of FMC settings (or is supposed to work).

 

I am still betting you are doing something wrong.

So AP is green?

GS is green?

Loc is green?

 

have you tried at other airports?

 

And can you post a picture while on the ILS? (dont ask me how....I have yet to succeed in posting pics on AVSIM).

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I do not think there are any settings for this in the FMC.

 

Autoland works regardless of FMC settings (or is supposed to work).

 

I am still betting you are doing something wrong.

So AP is green?

GS is green?

Loc is green?

 

have you tried at other airports?

 

And can you post a picture while on the ILS? (dont ask me how....I have yet to succeed in posting pics on AVSIM).

hi thanks for reply

i have a funny feeling i have been pressing APP to early when LOC might not have been captured

in fmc this setting can be changed 

thanks again for help

jeff20

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hi thanks for reply

i have a funny feeling i have been pressing APP to early when LOC might not have been captured

in fmc this setting can be changed

thanks again for help

jeff20

Aaah....you know what I think?

 

I think you are intercepting final approach with LNAV?

right?

So what you need to do is

1) use Heading Select BEFORE you intercept final.

2) Then, while in HDG mode, you press the APP mode.

The APP button SHOULD be pressed before the localizer is captured!

The whole purpose of the APP mode IS to capture the LOC and then the GS.

Without APP mode you will continue to fly your heading for ever, or you continue on your LNAV track which looks like you intercepted the LOC, but you have not!

 

I think you have picked an aircraft that is a little too advanced for you at the moment.

(I am not being mean here.)

So you should at least try to read some of the FCTM (Flight Crew Training Manual) or look for some videos on you tube. Or you can buy a professional made video of the 777 being operated on a real flight on a real airline.

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i have a funny feeling i have been pressing APP to early when LOC might not have been captured

 

in fmc this setting can be changed

 

You can arm APP before localizer capture.  That isn't your problem.  I think the FMC setting you are referring to is "GS Capture before Loc."  "Yes" might help if you are approaching too high and you don't capture the localizer before you intersect the glideslope.  But it's much better to be low enough that when the glideslope comes alive you are below it, and you capture the localizer before you capture the GS.

 

Some questions: 

 

1) Are you seeing the localizer and glideslope indications on the ND in APP mode and on the PFD?  Are you sure that the ILS is tuned?

 

2) When you start your approach ten miles out are you higher than 3,000 ft above the runway altitude?  3,000 ft at ten miles out should put you close to being on the glideslope.

 

Mike

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Aaah....you know what I think?

 

I think you are intercepting final approach with LNAV?

right?

So what you need to do is

1) use Heading Select BEFORE you intercept final.

2) Then, while in HDG mode, you press the APP mode.

The APP button SHOULD be pressed before the localizer is captured!

The whole purpose of the APP mode IS to capture the LOC and then the GS.

Without APP mode you will continue to fly your heading for ever, or you continue on your LNAV track which looks like you intercepted the LOC, but you have not!

 

I think you have picked an aircraft that is a little too advanced for you at the moment.

(I am not being mean here.)

So you should at least try to read some of the FCTM (Flight Crew Training Manual) or look for some videos on you tube. Or you can buy a professional made video of the 777 being operated on a real flight on a real airline.

thanks for advice i really appreciate it i will try what you suggest

jeff

You can arm APP before localizer capture.  That isn't your problem.  I think the FMC setting you are referring to is "GS Capture before Loc."  "Yes" might help if you are approaching too high and you don't capture the localizer before you intersect the glideslope.  But it's much better to be low enough that when the glideslope comes alive you are below it, and you capture the localizer before you capture the GS.

 

Some questions: 

 

1) Are you seeing the localizer and glideslope indications on the ND in APP mode and on the PFD?  Are you sure that the ILS is tuned?

 

2) When you start your approach ten miles out are you higher than 3,000 ft above the runway altitude?  3,000 ft at ten miles out should put you close to being on the glideslope.

 

Mike

thanks for advice mike will try this

thanks for advice i really appreciate it i will try what you suggest

jeff

thanks for advice mike will try this

jeff20

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