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787 Flightdeck MFD Buttons  
User currently offlinekrisyyz From Canada, joined Nov 2004, 1590 posts, RR: 0
Posted (1 year 11 months 3 weeks 4 days 8 hours ago) and read 3835 times:

Hi,

I'm unclear as to what the MFD buttons are used for on the 787s EFIS panel. Do they simply move the systems pages between the Capt's and the FO's inboard displays? Or do they split the inboard display so both the MFD and the ND can be viewed at the same time by both pilots? I know the EICAS is a single button on the 787 (either left or right inboard display), but both pilots have a duel MFD button (1 and 2). The system pages and checklist seems to be available on both inboard displays plus the lower MFD/CDU. What happens if both pilots press both MFD buttons so all 4 are lit up?


As you can see in this picture, the MFD “2” button is activate, the FTCL page is displayed on the FO's inboard, what would happen if the FO pressed the MFD “1” as well button?


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Click here for bigger photo!

Photo © James Mellon



I hope you can understand my roundabout question!


Thanks,

KrisYYZ

7 replies: All unread, jump to last
 
User currently offlinetdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 1, posted (1 year 11 months 3 weeks 4 days 4 hours ago) and read 3736 times:

Quoting krisyyz (Thread starter):
I'm unclear as to what the MFD buttons are used for on the 787s EFIS panel. Do they simply move the systems pages between the Capt's and the FO's inboard displays?

They don't move anything; they tell the display system which MFD you want to command. Just hitting the MFD button doesn't do anything other than turn the light on (and turn other light off). To get a display change you'd have to select a page (the "6 pack" of buttons just below the MFD selectors).

Think of the MFD buttons as the display selector; it tells the display system what display you want future commands routed to.

Quoting krisyyz (Thread starter):
Or do they split the inboard display so both the MFD and the ND can be viewed at the same time by both pilots?

The ND is just another display. The 787 has two PFD's (normally the two outboard physical screens) and EICAS (half a physical screen) that will always be displayed. The two inboard physical displays and the lower display are all divided in software into two MFD's per physical display (6 total). EICAS must occupy one of these, leaving 5 that the flight crew can put up anything they want.

The ND is one of the options; if you put the ND on two side-by-side MFD's the displays will merge together into the "mega map" that you see on the left side in the linked photo. You can have the ND only occuply one MFD (half a physical display) and put other stuff on the other side if you want to.

Quoting krisyyz (Thread starter):
What happens if both pilots press both MFD buttons so all 4 are lit up?

They can't. Only one MFD light in each pair can be lit at a time. For the display with EICAS on it, only one MFD light can be illuminated (EICAS blocks the other MFD).

Quoting krisyyz (Thread starter):
As you can see in this picture, the MFD “2” button is activate, the FTCL page is displayed on the FO's inboard, what would happen if the FO pressed the MFD “1” as well button?

Nothing. EICAS is on the FO's inboard #1 MFD so he can't select that MFD to command. He'd have to move EICAS to the left side, at which point he'd have access to MFD 1 and then he could pick any of the display buttons to put that display on the inboard display MFD 1.

Tom.


User currently offlinekrisyyz From Canada, joined Nov 2004, 1590 posts, RR: 0
Reply 2, posted (1 year 11 months 3 weeks 4 days 3 hours ago) and read 3724 times:

Thanks so much Tom! I really appreciate your detailed explanation, it cleared up all my questions.

KrisYYZ


User currently offlineBoeingGuy From United States of America, joined Dec 2010, 2954 posts, RR: 7
Reply 3, posted (1 year 11 months 3 weeks 4 days 3 hours ago) and read 3716 times:

By the way, one of my huge pet peeves that my fellow Boeing employees and others don't follow anymore is using correct terminology.

The only "buttons" on the Flight Deck are on the Captain's shirt. We have Switches and Selectors on the Flight Deck. On things like the TCP or MCDU they are "keys".

That's the way I was taught. You push a switch.

Depress is what happens when you take away its Prozac. Press is what the dry cleaners does to your shirts.

So quick lesson in proper terminology which my colleagues don't even follow anymore. I heard "Press the Autopilot Engage button" all the time.......  


User currently offlinekrisyyz From Canada, joined Nov 2004, 1590 posts, RR: 0
Reply 4, posted (1 year 11 months 3 weeks 4 days 2 hours ago) and read 3677 times:

Quoting BoeingGuy (Reply 3):
The only "buttons" on the Flight Deck are on the Captain's shirt. We have Switches and Selectors on the Flight Deck. On things like the TCP or MCDU they are "keys".

duly noted!

KrisYYZ


User currently offlinetdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 5, posted (1 year 11 months 3 weeks 4 days 1 hour ago) and read 3640 times:

Quoting BoeingGuy (Reply 3):
By the way, one of my huge pet peeves that my fellow Boeing employees and others don't follow anymore is using correct terminology.

Mea culpa. Thank you for the reminder.

Tom.


User currently offlineStarlionblue From Greenland, joined Feb 2004, 16976 posts, RR: 67
Reply 6, posted (1 year 11 months 3 weeks 4 days ago) and read 3610 times:

Sorry to hijack but what are the red sleeves around the bottom of the control columns for?


"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlinetdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 7, posted (1 year 11 months 3 weeks 3 days 23 hours ago) and read 3585 times:

Quoting Starlionblue (Reply 6):
what are the red sleeves around the bottom of the control columns for?

Flight test hardware. Flight test aircraft frequently have independent force measurement on the column (you need those measurements to show the regulators the stick force per g data that goes into the longitudinal stability requirements).

Tom.


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