Martinlest
Topic Author
Posts: 9
Joined: Sun Nov 06, 2016 9:54 pm

B777 EICAS question

Thu Apr 05, 2018 2:23 pm

Wondering when you would see the air system info on the EICAS, (cabin alt, ldg alt, duct press etc.). Is the information visible even when cabin pressurisation is set to automatic? With the PMDG a/c I sometimes get a yellow LDG ALT warning on the instruments (not sure why - the flight plan loaded up OK). Trying to reset the landing altitude is impossible as I don't have the current setting showing on the EICAS.

How does this work in the 777 (real-world, or PMDG!)? If I should be seeing this information, how do I bring it up? Tried various EICAS/MFD combinations to no avail.

Thanks.

Martin
 
Lpbri
Posts: 74
Joined: Tue Sep 27, 2016 7:18 pm

Re: B777 EICAS question

Thu Apr 05, 2018 2:43 pm

The synoptics page for AIR should have most of this info.
 
aeropix
Posts: 120
Joined: Mon Jun 06, 2005 2:08 pm

Re: B777 EICAS question

Thu Apr 05, 2018 3:08 pm

Whenever the air synoptic is displayed on the lower DU, the cabin altitude “pop up” will display simultaneously. Under normal operations you would not manually change the landing altitude as it is correlated with the origin and destination airports in the FMC. The origin altitude will be used in the event of an air turn back early in the flight.

If you pull the LDG ALT selector you can manually change the landing altitude and the EICAS will then display the landing altitude followed by “MAN” as a reminder. This is useful in controlling the cabin pressure in case of a suspicious device found on board which may be triggered by cabin pressure changes, but I’ve never encountered any other SOP requiring its use.

Are you trying to use your flight simulator to do touch and goes at some airport which is neither the origin or destination in the flight plan? That may result in the EICAS advisory message you’ve described. Or maybe you’ve accidentally clicked on the selector with your mouse, thus activating it?
Last edited by aeropix on Thu Apr 05, 2018 3:18 pm, edited 1 time in total.
 
BoeingGuy
Posts: 4834
Joined: Fri Dec 10, 2010 6:01 pm

Re: B777 EICAS question

Thu Apr 05, 2018 3:19 pm

aeropix wrote:
Whenever the air synoptic is displayed on the lower DU, the cabin altitude “pop up” will display simultaneously. There is no way to manually change the landing altitude as it is correlated with the origin and destination airports in the FMC. The origin altitude will be used in the event of an air turn back early in the flight.

Are you trying to use your flight simulator to do touch and goes at some airport which is neither the origin or destination in the flight plan? That may result in the EICAS advisory message you’ve described.


Yes you can. The 777, and all other Boeing models, has a Landing Altitude (LDG ALT) Selector on the overhead panel that lets you manually select a landing altitude for pressurization.
 
aeropix
Posts: 120
Joined: Mon Jun 06, 2005 2:08 pm

Re: B777 EICAS question

Thu Apr 05, 2018 3:22 pm

BoeingGuy wrote:

Yes you can. The 777, and all other Boeing models, has a Landing Altitude (LDG ALT) Selector on the overhead panel that lets you manually select a landing altitude for pressurization.


Unfortunately my incomplete submission was picked up by the system before I had finished writing it. You are correct BoeingGuy.

Also to add to my original post there is a supplementary procedure requiring the LDG ALT if the departure / destination is not in the NAV database but as I’ve never had to operate to such an airfield I have never had occasion to use that functionality.
 
Martinlest
Topic Author
Posts: 9
Joined: Sun Nov 06, 2016 9:54 pm

Re: B777 EICAS question

Sat Apr 14, 2018 3:45 pm

Thanks for the replies.. not sure how accurately the b777s I have reflect this. I don't seem to get the information up.

Who is online

Users browsing this forum: sgbroimp, T1a and 19 guests

Popular Searches On Airliners.net

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos