Sign in to follow this  
Driver170

Circle to land with VNAV

Recommended Posts

I use VNAV as the pitch and LOC for the lateral part going down the ILS to the MDA circling minima (920)

 

At 1000 the FMA shows VNAV ALT (MCP ALT SET AT 1000) and when my acft levels off and i enter the MAA the acft then goes back into VNAV PTH and starts to descend?

Share this post


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

The VNAV wants to continue with the LOC or ILS. It doesn't know you're doing a circle.

 

You could Alt hold and reset the MCP or wait to reset the MCP on the Missed approach.

Share this post


Link to post
Share on other sites

Ok thanks matt.

 

Would you input the ILS from the DB or just tune the freq?

Share this post


Link to post
Share on other sites

 

 


At 1000 the FMA shows VNAV ALT (MCP ALT SET AT 1000) and when my acft levels off and i enter the MAA the acft then goes back into VNAV PTH and starts to descend?

 

A circle is a hand-flown event, or should be to the max extent possible. If you truly, actually need AP assistance, use ALT HOLD and HDG SEL.

 

 

 


Would you input the ILS from the DB or just tune the freq?

 

For the procedure up to the circle? Sure, but a circle is an intense procedure a lot of the time, and your primary concern is maintaining a visual on the runway. If you lose the runway, guess where you're going...

 

Up and out.

 

Try again.

 

 

 

So, kick off the autopilot and fly. No sense in adding automation where it shouldn't be.

Share this post


Link to post
Share on other sites

A circle is a hand-flown event, or should be to the max extent possible. If you truly, actually need AP assistance, use ALT HOLD and HDG SEL.

 

I'm using automation to the point after the threshold (3 X 100 AGL) and turning to line up with the C/L and i'll disconnect and everything is visual from there!

Share this post


Link to post
Share on other sites

I'm using automation to the point after the threshold (3 X 100 AGL) and turning to line up with the C/L and i'll disconnect and everything is visual from there!

 

Okay...so what's the question?

Share this post


Link to post
Share on other sites

Question was about VNAV and how far you can use this? As i found out only to the MDA.

 

And also selecting the ILS from the DB to begin the circle to land.

Share this post


Link to post
Share on other sites

 

 


And also selecting the ILS from the DB to begin the circle to land.

 

Why would you need to do this? If you're on an RNAV approach in VNAV, then there's no reason to do this. If you're flying the ILS, you would've selected this well before getting to the point of the circle to land procedure.

Share this post


Link to post
Share on other sites

Well i actually mean't the ILS would of been selected during cruise!

 

Also after i turn downwind the approach goes into the MAP will i need to select the actual runway from the DB i'm landing on?

Share this post


Link to post
Share on other sites

When you are flying a circle-to-land approach get your head out of the FMC, setting runways and other gimmicks and fly the airplane.

 

Don't mean to be blunt but you'll enjoy the sim much more! Fly the airplane!.

 

Turn off the FDs and look outside!

 

Go on Youtube and search "Children of the Magenta".

Share this post


Link to post
Share on other sites

 

 


Also after i turn downwind the approach goes into the MAP will i need to select the actual runway from the DB i'm landing on?

 

Unless you want the extended centrelines, as Patrick mentioned, and I mentioned earlier:

Head up and out. Fly the plane.

Share this post


Link to post
Share on other sites

 

By the Pros...  There's no other, plausible, way to do it :-) 

 

Can easily be replicated on PMDG's 777s

Share this post


Link to post
Share on other sites

Hardy makes a very nice procedures simulator. 

 

I have two rules about circling approaches.  I don't do them at night and I don't do them when the base leg is downwind. 

 

Billy Bluestar

Share this post


Link to post
Share on other sites

 

 


when the base leg is downwind. 

 

Don't want to potentially blow through the final to the new runway because of the extra GS you pick up?

Share this post


Link to post
Share on other sites

@Billy:  But, shouldn't the base leg always preferably be downwind, unless you're landing with tail wind ?

Share this post


Link to post
Share on other sites

@Billy:  But, shouldn't the base leg always preferably be downwind, unless you're landing with tail wind ?

I see your view but consider a crosswind landing, in this case the base leg will be either with tail wind or head wind component.  Anticipating the tail wind component while turning base to final is very basic airmanship taught to fledgling private pilots LOL I see the Navy C-12's doing it all day down the street from my house in Corpus (Navy does not level wings on base, they maintain a banked turn all the way from downwind to final rolling out right on the numbers).  So, along with Kyle, not sure what Billy had in mind.

Share this post


Link to post
Share on other sites

You guys are mixing the location of being downwind of the runway and having a tailwind on base.

Share this post


Link to post
Share on other sites

PANOPS and TERPS is used by people for developing approaches and your virtual-boss in making SOPs.

 

You're flying flight sim. I think you are really taking from your fun by fretting about such things.

 

Use what the applicable, current approach plate says. Don't worry about TERPS, or DBs, or Vs or, MANPLOPS, or whatever. If the chart says your circling minimums are 600' and 1 1/2 mile vis then that's your minimums.

 

Fly the approach - see airport - fly airplane - land airplane.

 

Fly the approach - don't see airport - fly missed approach - go to alternate/back home - have brew with fellow crew member at local establishment.

 

It doesn't need to be super-space-ship-NASA-precise-super-programmed every phase of flight.

Share this post


Link to post
Share on other sites

Air China crashed a 767 in Busan because they didn't relize they were confused on TERPS vs PANOPS. It happens.

Share this post


Link to post
Share on other sites

 

By the Pros...  There's no other, plausible, way to do it :-) 

 

Can easily be replicated on PMDG's 777s

 

That is a brilliant video, thanks! I've bookmarked all of his on Youtube to watch later.

I love stuff like that.

 

 

Edit

 

I saw it Dave! (and agree) ;)

Share this post


Link to post
Share on other sites

PANOPS and TERPS is used by people for developing approaches and your virtual-boss in making SOPs.

 

You're flying flight sim. I think you are really taking from your fun by fretting about such things.

 

Use what the applicable, current approach plate says. Don't worry about TERPS, or DBs, or Vs or, MANPLOPS, or whatever. If the chart says your circling minimums are 600' and 1 1/2 mile vis then that's your minimums.

 

Fly the approach - see airport - fly airplane - land airplane.

 

Fly the approach - don't see airport - fly missed approach - go to alternate/back home - have brew with fellow crew member at local establishment.

 

It doesn't need to be super-space-ship-NASA-precise-super-programmed every phase of flight.

 

Good point. But its always good to know the regs! Thats if you are interested. But like you say whats on the plate is what you need to know.

Share this post


Link to post
Share on other sites

 

 


That is a brilliant video, thanks! I've bookmarked all of his on Youtube to watch later.

I love stuff like that.

Ditto. I learned something new through that video, too.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this