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Old 31st Aug 2002, 23:39
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crj-jockey
 
Join Date: Aug 2002
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@karaoke
negativ

@traffic
correct. The FMC will force the autopilot to smoothly intercept the direct track between waypoint a and b, if not programmed to fly-over a, and then intercept the applicable track. This is not a big deal, if the track differs by only for example 20 degrees. However, if for instance the inbound to a is 90 and the track from a to b ist 180, the aircraft will normally turn quite early.
There are a lot of SIDs with fly-over wpts, they are underlined in our charts, and the fmc is programmed accordingly.
But once again! If you want us to fly over a specific fix, please tell us. Otherwise we will pass by!
To make it clear: If you clear us via pam to arnem, the a/c will track to pam initially, and then (before pam) initiate a turn to intercept the direct pam-arnem track.
In the 90 degree turn example the a/c will start the turn about 6.3 NM before the fix with 25 bank and a gs of 450kts. With half-bank mode about 12NM before the first fix.

Last edited by crj-jockey; 31st Aug 2002 at 23:57.
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