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Losing LNAV on the W90

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My flight plan SEGS "OSELO 04N090W 06N090W 08N090W 10N090W 12N090W RAB UA770 NALDA UT21 CPE AXUDA UL207 IPSEV L207 SEAGL GILLL1" KIAH.

 

I guess the NGX doesn't like to fly the W090, I lose LNAV from the second waypoint all the way till I get to RAB. After losing LNAV (the light is still active and illuminated) it will turn left until i manually correct it. Jump back on course and some time goes by and I lose LNAV again. It keeps happening unitel I get to RAB.  Anyone duplicate or have an answer? I imagine it has something to do with the aircraft IRS system. Would this happen in real world as well?

 

 

Michael

Kind of a strange routing.  Try 0490W 0690W... and see if that works. 

 

UZ512 and UL208 are sure a lot easier.  :-)

 

Billy Bluestar

I Earned My Spurs in Vietnam

  • Author

Same results. Kinda weird. Can anyone replicate?

Try putting 04N090.01W in and see if that works.  If it does work, I have a good idea what the problem is.  :-)

 

the other bill   

I Earned My Spurs in Vietnam

04N90 06N90 08N90 10N90 12N90 RAB

 

 

Kind of a strange routing.  Try 0490W 0690W... and see if that works. 

 

UZ512 and UL208 are sure a lot easier.  :-)

 

Billy Bluestar

 

 

0490W are waypoints too.

but they are in the Southern hemisphere.

qfafin.jpg
Trent Hopkinson, 2015 Crewmember of www.mangrove.com.au WorldFlight sim

          Youtube channel www.youtube.com/user/musicalaviator

  • Author

Try putting 04N090.01W in and see if that works.

Invalid Entry on the FMC

 

 

Michael Warren

Full names in the forum.

 

Final warning.

Who is this warning directed toward Mr. Rodgers?

 

Billy Bluestar

I Earned My Spurs in Vietnam

  • Author

Irrelevant Blue star. It was probably me. I originally signed with my first name and edited it and put my last. Back to the task at hand..

Whats your idea of what could be happening and I couldn't get that decimal in the fmc under that format.

 

 

Michael Warren

  • Commercial Member

 

 


Who is this warning directed toward Mr. Rodgers?

 

Post 1, 3, 4 and (prior to the edit) 7.

 

 

 


I originally signed with my first name and edited it and put my last. Back to the task at hand..

 

Not only you, but thanks for the edit.

 

 

 


Whats your idea of what could be happening and I couldn't get that decimal in the fmc under that format.

 

The decimal format was wrong anyway. From what I recall, it should be:

N0400.0W09000.1; or

N04W090

 

The direction always precedes the number unless it's in the short 5 char format (which isn't actually a lat/lon format as much as it's a fake "fix" translated by the nav database).

 

The acceptable Boeing formats are in FCOMv2.

Kyle Rodgers

Try 0490N 0690N ...

 

That should work.

 

Billy Bluestar

I Earned My Spurs in Vietnam

  • Author

Thank you sir.

 

Post 1, 3, 4 and (prior to the edit) 7.

 

 

 

 

Not only you, but thanks for the edit.

 

 

 

 

The decimal format was wrong anyway. From what I recall, it should be:

N0400.0W09000.1; or

N04W090

 

The direction always precedes the number unless it's in the short 5 char format (which isn't actually a lat/lon format as much as it's a fake "fix" translated by the nav database).

 

The acceptable Boeing formats are in FCOMv2.

Thank you sir!

I'm currently in the process of determining if I lose longitude navigation by using the format you've provided.

 

 

Michael Warren

  • Author

That seemed to do the trick. Thank you! Can anyone explain why?

 

Michael Warren

  • Commercial Member

 

 


Can anyone explain why?

 

Try turning your computer on by clicking the CD eject button.

 

That may sound dumb, but think about it:

Computers are programmed to expect certain things to get certain actions. If you don't do what's expected, you won't get the action.

Kyle Rodgers

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