Jump to content

United 737


wisefox7524

Recommended Posts

I think that the 73Ws used the EFIS/MAP setting to share commonality with the 733/735. The 738/739/73J uses the PFD/ND type display.

 

Hummm.. that's kinda good to know. I rarely ever fly the United jets because I generally can't

stand EFIS/MAP..  So far, all of mine, including the 800 and 900 still have EFIS/MAP set as the

display. Maybe I'll reset the 800 and 900 to PFD/ND so they can get a little use.

I was real glad when Southwest finally ditched the old EFIS/MAP display.. I think it's quite cluttered

compared to PFD/ND.

Link to comment
Share on other sites

I notice the new United PFD/ND is a bit different from Southwest's version.. IE: fuel

indications, lower display mode, etc.. I like to have everything as close to real world as

possible, so I'll mimic what I see in that video when I redo my United planes.

Link to comment
Share on other sites

  • Commercial Member

 

 


Is it true that the EFIS/Map configuration does not allow them to do RNP approaches?

 

...ish?

 

The type isn't what matters as much as the display of the performance numbers.  Looking at pictures of the EFIS/Map display, I don't see the scales displayed.  These are required for RNP AR procedures (not RNP in general).  If the EFIS/Map doesn't display those scales (even if the data is available), and the over/under with full ND does, then that's likely the reason for the change.

 

Even the 737-300/400/500 can have RNP AR certification if you paid for the right hardware/software/displays.  In the case of SWA, I feel like it was more of a case of the different setup already provides the necessary features for RNP AR, and they're getting rid of the 300/400/500s (removing the need for commonality).  As such, switching to existing (arguably better) software was the better answer, instead of trying to modify existing software (to drive the display of the performance scales).

 

Boeing explains the requirements here:

http://www.boeing.com/commercial/aeromagazine/articles/2011_q4/5/

Kyle Rodgers

Link to comment
Share on other sites

...ish?

 

The type isn't what matters as much as the display of the performance numbers.  Looking at pictures of the EFIS/Map display, I don't see the scales displayed.  These are required for RNP AR procedures (not RNP in general).  If the EFIS/Map doesn't display those scales (even if the data is available), and the over/under with full ND does, then that's likely the reason for the change.

 

Even the 737-300/400/500 can have RNP AR certification if you paid for the right hardware/software/displays.  In the case of SWA, I feel like it was more of a case of the different setup already provides the necessary features for RNP AR, and they're getting rid of the 300/400/500s (removing the need for commonality).  As such, switching to existing (arguably better) software was the better answer, instead of trying to modify existing software (to drive the display of the performance scales).

 

Boeing explains the requirements here:

http://www.boeing.com/commercial/aeromagazine/articles/2011_q4/5/

 

AA's older 737s don't display the ANP values on the nav display.  The pilot monitoring monitors the ANP values on PROG page 4/4 on the CDU during RNP approaches.

Link to comment
Share on other sites

  • Commercial Member

AA's older 737s don't display the ANP values on the nav display.  The pilot monitoring monitors the ANP values on PROG page 4/4 on the CDU during RNP approaches.

 

I have a feeling that got through on an Ops Spec exemption, as that seems pretty unique.  Most references I've seen (in FAA-land anyway) require the nav perf scales in forward field of view (that Boeing link, above, mentions it like that as well a few times).

 

Then again, I just noticed you referred only used the term RNP, and I was referring only to RNP AR requirements.  It's quite the sticking point here in the sim group.  RNP is very broad, and for whatever reason, many in the sim realm seems to assume RNP AR is the broad RNP standard.

 

NPS is only required for RNP AR.

Kyle Rodgers

Link to comment
Share on other sites

I was referring to the special authorization approaches.  The newer airplanes have NPS, the older ones don't.  We can shoot any AR approaches in either case.  It is much nicer in the NPS airplanes though.  The lowest RNP we are authorized for is 0.11, perhaps that has something to do with it.

Link to comment
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
  • 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.
×
×
  • Create New...