(UTC)
  Visit Captain Sim web site  
  Welcome, Guest. Please Login or Register

  

  CAPTAIN SIM FORUM › 757 Captain › 757 version 4.x (FSX ONLY) › PERF/VNAV not available msg
‹ Previous Topic | Next Topic ›
Page Index Toggle Pages: 1 Send TopicPrint
PERF/VNAV not available msg (Read 6546 times)
dc9man
Full Member
*
Offline



Posts: 18
Location: Livingston, Montana USA
Joined: Apr 10th, 2008
Gender: Male
PERF/VNAV not available msg
Apr 12th, 2008 at 5:52pm
Print Post  
After takeoff and after engaging the autopilot I select LNAV which works just fine then push the VNAV button and everytime I get a FMC message that says 'PERF/VNAV not available'. What am I doing wrong........................help!!!!!

                   Tom
  
Back to top
 
IP Logged
 
signmanbob
Senior Member
*
Offline



Posts: 274
Location: Alabama, USA
Joined: Feb 1st, 2008
Gender: Male
Re: PERF/VNAV not available msg
Reply #1 - Apr 12th, 2008 at 10:08pm
Print Post  
Are you sure you have all of the performance information loaded in the FMC/CDU correctly?  My VNAV works very well.
  
Back to top
 
IP Logged
 
w4fej
Full Member
*
Offline



Posts: 13
Joined: Nov 23rd, 2006
Re: PERF/VNAV not available msg
Reply #2 - Apr 13th, 2008 at 12:39am
Print Post  
Are you sure you haven't done something like put a 15000' crossing restriction 2-3 miles after takeoff?  If it can't hack the climb based on the route programmed it will barf on you .

  I have found MANY things wrong in the 757 package but the FMC system isn't one of them.  Programmed properly it works without error.  (so far)

  Mike B.
  
Back to top
 
IP Logged
 
dc9man
Full Member
*
Offline



Posts: 18
Location: Livingston, Montana USA
Joined: Apr 10th, 2008
Gender: Male
Re: PERF/VNAV not available msg
Reply #3 - Apr 13th, 2008 at 5:33pm
Print Post  
Thanks guys for the VNAV tips after being a little more meticulous with perf loading it finally worked for Ol' Tom, I appreciate it.

                Tom Smiley
  
Back to top
 
IP Logged
 
signmanbob
Senior Member
*
Offline



Posts: 274
Location: Alabama, USA
Joined: Feb 1st, 2008
Gender: Male
Re: PERF/VNAV not available msg
Reply #4 - Apr 13th, 2008 at 6:16pm
Print Post  
Glad to hear that you got your problem fixed Tom.
  
Back to top
 
IP Logged
 
Page Index Toggle Pages: 1
Send TopicPrint
‹ Previous Topic | Next Topic ›
 
  « Board Index ‹ Board  ^Top   

CAPTAIN SIM FORUM » Powered by YaBB 2.6.0!
YaBB Forum Software © 2000-2024. All Rights Reserved.

Valid RSS Valid XHTML Valid CSS Powered by Perl Source Forge