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Special Letters On FMCs?  
User currently offlineAirwave From United States of America, joined Mar 2006, 1117 posts, RR: 3
Posted (8 years 1 month 3 weeks 4 days 13 hours ago) and read 1392 times:

Since there is no such thing as a stupid question, we'll just call this an odd one.

I was looking at pics of FMCs earlier and I noticed that on one, the keyboard has several letters with white box lines, such as:

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Photo © Craig Murray



while others do not:

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Photo © Daniel Werner



Is there any particular reason or function for this? It seems to be a recent feature, so which aircraft have it?It's not a big deal, it just seemed interesting and my curiousity was piqued, lol. Thanks for any help, guys.


Airwave  eyebrow 


When you do things right, people won't be sure you've done anything at all.
9 replies: All unread, jump to last
 
User currently offlineBri2k1 From United States of America, joined Dec 2004, 988 posts, RR: 4
Reply 1, posted (8 years 1 month 3 weeks 4 days 13 hours ago) and read 1389 times:

The letters with boxes around them in the top picture are E, N, S, and W. Aside from spelling NEWS, they represent North, South, East, and West. Never having used one, I don't know how often you input the cardinal directions, but there's my guess.


Position and hold
User currently offlineAtlamt From United States of America, joined Sep 2001, 240 posts, RR: 3
Reply 2, posted (8 years 1 month 3 weeks 4 days 13 hours ago) and read 1389 times:

Just a stab at this one but it looks like compas headings. North South East and West. Probably to make entering the position eaiser.


Fwd to MCO and Placard
User currently offlineAirwave From United States of America, joined Mar 2006, 1117 posts, RR: 3
Reply 3, posted (8 years 1 month 3 weeks 4 days 13 hours ago) and read 1384 times:

Quoting Bri2k1 (Reply 1):
they represent North, South, East, and West.



Quoting Atlamt (Reply 2):
it looks like compas headings. North South East and West.

Oh, wow. Completely missed making that connection, haha. You guys are probably spot on; it's gotta be compass-related. Thanks for making the obvious, er, obvious, lol.

But now, this begs another question: how would that function be used, as I was under the impression that headings were entered as three-digit numbers, not letters.


Airwave  eyebrow 



When you do things right, people won't be sure you've done anything at all.
User currently offlineSlamClick From United States of America, joined Nov 2003, 10062 posts, RR: 68
Reply 4, posted (8 years 1 month 3 weeks 4 days 13 hours ago) and read 1380 times:

They do indeed stand for North South East and West but not for inputting heading information.

It is for N or S latitude and E or W longitude when inputting waypoints.
Cool huh?



Happiness is not seeing another trite Ste. Maarten photo all week long.
User currently offlineAirwave From United States of America, joined Mar 2006, 1117 posts, RR: 3
Reply 5, posted (8 years 1 month 3 weeks 4 days 12 hours ago) and read 1365 times:

Quoting SlamClick (Reply 4):
It is for N or S latitude and E or W longitude when inputting waypoints.
Cool huh?

Ahhh, now I get it. That is cool, haha. Thanks, SlamClick.


Airwave  eyebrow 



When you do things right, people won't be sure you've done anything at all.
User currently offlineDC-10Tech From United States of America, joined Jun 2001, 298 posts, RR: 2
Reply 6, posted (8 years 1 month 3 weeks 4 days 4 hours ago) and read 1297 times:

Quoting Airwave (Reply 3):
But now, this begs another question: how would that function be used, as I was under the impression that headings were entered as three-digit numbers, not letters.

They're for inputting manual waypoints.



Forums.AMTCentral.com
User currently offlineHAWK21M From India, joined Jan 2001, 31667 posts, RR: 56
Reply 7, posted (8 years 1 month 3 weeks 3 days 17 hours ago) and read 1230 times:

The Keys N E W S are used to Type in Lattitude & Longitude if IRS is tuned from the FMC CDU rather than the IRMP/IRS Select panel.
regds
MEL



Think of the brighter side!
User currently offlineMir From United States of America, joined Jan 2004, 21528 posts, RR: 55
Reply 8, posted (8 years 1 month 3 weeks 3 days 7 hours ago) and read 1188 times:

When you go over the Atlantic, your waypoint are in latitude and longitude. 55N40W, for instance. That's where they come in handy.

-Mir



7 billion, one nation, imagination...it's a beautiful day
User currently offlineCosmicCruiser From United States of America, joined Feb 2005, 2255 posts, RR: 15
Reply 9, posted (8 years 1 month 3 weeks 3 days 7 hours ago) and read 1186 times:

Quoting HAWK21M (Reply 7):
The Keys N E W S are used to Type in Lattitude & Longitude if IRS is tuned from the FMC CDU rather than the IRMP/IRS Select panel.
regds

not sure I get what you're saying unless you're referring to the Standby Flt Pln but others are correct. It's for inputing manual waypoints for whatever reason. For example, the NATs waypoints are entered manually in a shortcut format (at least in our database) eg. type and enter 5030N and you get N50.00.0, W030.00.0. If you need to go to a waypoint that's not in your database you can just enter the Lat/Lon and away you goooo.


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