Jump to content

Sign in to follow this  
whitav8

Quality Wings 787 - switch from LNAV/VNAV to LOC/GS

Recommended Posts

Fellow Quality Wings 787 flyers, I don't always get a switch from LNAV/VNAV to plain LOC/GS at approach even though I push APP on the MCP. What am I doing wrong?

Thanks

 

Dave W.


PC=9700K@5Ghz+RTX2070  VR=HP Reverb|   Software = Windows 10 | Flight SIms = P3D, CAP2, DCS World, IL-2,  Aerofly FS2

Share this post


Link to post

Not really sure if this could be your issue, but if the LNAV course parallels the localizer course sometimes it may be necessary to switch to heading select to help with intercepting it. 


Here are the guidelines from the flight crew training manual:

APP mode should not be selected until:
• the ILS is tuned and identified
• the airplane is on an inbound intercept heading
• both localizer and glide slope pointers appear on the attitude display in the
proper position
• clearance for the approach has been received.
The glide slope may be captured before the localizer in some airplanes. The glide
slope may be captured from either above or below. Glide slope capture does not
occur if the intercept angle to the localizer is greater than 80°. The maximum
intercept angle for the localizer is 120°. To avoid unwanted glide slope capture,
LOC mode may be selected initially, followed by the APP mode.

When using LNAV to intercept the final approach course, ensure raw data
indicates localizer interception to avoid descending on the glide slope with LOC
not captured. If needed, use HDG SEL/TRK SEL or HDG HOLD/TRK HOLD to
establish an intercept heading to the final approach course.
 

  • Like 1

Brian W

KPAE, KRNT

Share this post


Link to post

Thanks much - I'll try to make sure all those steps are followed

 

Dave W.


PC=9700K@5Ghz+RTX2070  VR=HP Reverb|   Software = Windows 10 | Flight SIms = P3D, CAP2, DCS World, IL-2,  Aerofly FS2

Share this post


Link to post

I also found it odd at first that the 787 is so automated that it does not even have a separate rose or arc mode on the ND. The only indication of the localizer/GS is on the PFD.

Shez


Shez Ansari

Windows 10 Home 64-bit; CPU: Intel Core i7-8700K; GPU: EVGA GEFORCE GTX 1080Ti 11GB; MB: Gigabyte Z370 AORUS Gaming 5; RAM: 16GB; HD: Samsung 960 Pro 512GB SSD, Samsung 850 Pro 256GB SSD; Display: ASUS 4K 28", Asus UHD 26"

Share this post


Link to post
59 minutes ago, ShezA said:

I also found it odd at first that the 787 is so automated that it does not even have a separate rose or arc mode on the ND. The only indication of the localizer/GS is on the PFD.

Shez

Thank you I thought I was going insane


|Ryan Butterworth|

| i7 4790K@4.4GHz | 32GB RAM | EVGA GTX 1080Ti | ASUS Z97-Pro | 1TB 860 Evo | 500GB 840 Evo Win10 Pro | 1TB Samsung 7200rpm | Seasonic X750W |

 

 

Share this post


Link to post

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  
  • Tom Allensworth,
    Founder of AVSIM Online


  • Flight Simulation's Premier Resource!

    AVSIM is a free service to the flight simulation community. AVSIM is staffed completely by volunteers and all funds donated to AVSIM go directly back to supporting the community. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. Thank you for your support!

    Click here for more information and to see all donations year to date.
  • Donation Goals

    AVSIM's 2020 Fundraising Goal

    Donate to our annual general fundraising goal. This donation keeps our doors open and providing you service 24 x 7 x 365. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. We reset this goal every new year for the following year's goal.


    28%
    $7,170.00 of $25,000.00 Donate Now
×
×
  • Create New...