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 25 FMC TIPS,TRICKS,PROCEDURES-the only thread please (Read 33059 times)
snowman3725
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cruz-ing
Reply #60 - Nov 19th, 2010 at 9:54am
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getting and error message in the cdu of "UNABLE CRZ ALT" which obviously means the cruise altitude is wrong?  Huh
  
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Markoz
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Re: cruz-ing
Reply #61 - Nov 19th, 2010 at 1:29pm
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I get that message occasionally. I mostly get it if I'm doing a very short hop where I don't want to go above 10,000 feet even though there is time and distance to allow for a climb to a higher altitude before the descent phase of the flight. If that is the case, I simply ignore it. The other times I get it is if I have set the cruise altitude in the FMC and MCP above the MAX altitude. e.g. FMC and MCP altitude set to FL350 whilst the MAX altitude is FL343 (FL350 is above the MAX altitude of FL343 for the weight of the plane).

Hope this helps.

Mark
  

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snowman3725
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Re: cruz-ing
Reply #62 - Nov 22nd, 2010 at 2:39am
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You got it spot on i was going KBOS to KMCO at FL350, bumped it down to FL 335 and shes good to go. Thanks Mark!
  
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jgleach99
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FMS waypoints
Reply #63 - Jan 17th, 2011 at 7:47pm
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I've been having some problems recently with the FMS.  It does not have any waypoints in the memory or what ever stores them. I get the error message in the scratch pad telling me the waypoint is not in the data base, to include all airports.  Basically it does not recognize any waypoint, fix or airport i try to insert from the scratch pad........any ideas? thanks in advance!
  
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boeing247
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Input Data to FMC
Reply #64 - Apr 14th, 2011 at 3:24am
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I don't know if it's my error or an installation error, but I cannot seem to type any data into the FMC. I'm supposed to type it into the scratchpad, then enter it, but the scratchpad reads "Enter IRS Position". I can't seem to make that go away, and I've aligned IRS, so what do I do?

Thanks,
boeing247
  

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DAL191
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Re: Input Data to FMC
Reply #65 - Apr 14th, 2011 at 4:34am
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boeing247 wrote on Apr 14th, 2011 at 3:24am:
I don't know if it's my error or an installation error, but I cannot seem to type any data into the FMC. I'm supposed to type it into the scratchpad, then enter it, but the scratchpad reads "Enter IRS Position". I can't seem to make that go away, and I've aligned IRS, so what do I do?

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boeing247


RTFM!

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boeing247
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Re: Input Data to FMC
Reply #66 - Apr 14th, 2011 at 4:45am
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In all fairness, I did find in the manual that you have to input the IRS position even if you have aligned IRS. However, I was hoping for a response containing something other than a profane acronym.
  

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Markoz
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Re: Input Data to FMC
Reply #67 - Apr 14th, 2011 at 6:31am
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Have a look at the diagram here: '767 Captain’ FLIGHT MANUAL Part V – Flight Management System (cs767_manual5.pdf), page 31.

I select Right LSK 4 (NUMBER 6 in the diagram) and enter that in Left LSK 5 (NUMBER 7 in the diagram).
After entering the Airport, e.g. YMML, it will show S32o40.0 E144o50.0 where as the Left LSK 4 will display S32o40.0 E144o50.7, which more closely matches the 767's actual position S32o40.07 E144o50.74, according to the display at the top of my screen when I press SHIFT+Z (see my attached image).

Hope this helps.

Mark
  

FMC_position.jpg (Attachment deleted)

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DrJ1
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Re: Input Data to FMC
Reply #68 - Apr 14th, 2011 at 2:58pm
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Mark,

  You forgot the most important 1st step.   Press the CLR button on the FMS to clear the ENTER IRS POSITION message.
  
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Markoz
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Re: Input Data to FMC
Reply #69 - Apr 14th, 2011 at 4:25pm
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DrJ1 wrote on Apr 14th, 2011 at 2:58pm:
Mark,

 You forgot the most important 1st step.   Press the CLR button on the FMS to clear the ENTER IRS POSITION message.

Oops. Sorry mate. My bad. Sad

I obviously missed that the main problem he had, was that the ENTER IRS POSITION message was blocking you from entering anything else. It is just second nature for me to press CLR to get rid of the message, that I forgt that you need to do it.

Mark
  

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boeing247
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Re: Input Data to FMC
Reply #70 - Apr 15th, 2011 at 2:11am
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Okay, thanks (for your more polite and detailed responses)!  Wink
  

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Cappy
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Re: Input Data to FMC
Reply #71 - Apr 15th, 2011 at 7:33am
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Markoz wrote on Apr 14th, 2011 at 6:31am:
according to the display at the top of my screen when I press SHIFT+Z (see my attached image).

Hope this helps.

Mark

You cheat!  Tongue

That is a joke of course.  Wink
  

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Markoz
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Re: Input Data to FMC
Reply #72 - Apr 15th, 2011 at 8:34am
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Cappy wrote on Apr 15th, 2011 at 7:33am:
Markoz wrote on Apr 14th, 2011 at 6:31am:
according to the display at the top of my screen when I press SHIFT+Z (see my attached image).

Hope this helps.

Mark

You cheat!  Tongue

That is a joke of course.  Wink

It was and still is! I just don't need to press SHIFT+Z anymore to know that the Left LSK4 will display the correct location. Grin
  

Mark Fletcher



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connors
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FMS Route Entries
Reply #73 - May 8th, 2011 at 1:24am
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Hey all, I know that 4800N 09000W would be entered as 4890N, but how would I enter a track such as 4830N 11000W?  Any ideas?  Thanks in advance
  
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Markoz
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Re: FMS Route Entries
Reply #74 - May 8th, 2011 at 2:12am
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Try entering N4830.0W11000.0 then the waypoint will show as something like N48W110.
If you just enter N48W110, then the coordinate might be viewed as N4800.0W11000.0 which is close, but not exact.

Mark
  

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