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kmw510

FMC Plans Spiral Path to Waypoint

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After programming the fmc with the peble 4 STAR from San Diego the fmc path includes a spiral to the medley waypoint. Is there a way to correct this? I don't believe actual planes do this

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Yeah, the real plane doesn't do that. I do the PEBLE4 quite often. I'd  say they coded something wrong on the SID, maybe. You could do that SID conventionally or try to fix the LEGS.

 

How about a screenshot?

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hmm i had something similar a few days ago.

 

spin737 this one is for you matey with your experience. i set up a STAR and transition and the trans connecting to the STAR wasn't smooth like a nice curve or a straightline. it was kinda like a half a hook then the round part would go straight on? if you get the picture lol is this normal in real life? the 737 flew it no bother

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Yes

 

FIG 1-2-2

Track to Fix Leg Type

 

The bottom pict dude

And fig 121

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Yes

 

So did reading that article answer your question on whether it is normal or not?

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The spiral to the waypoint does not look like a flyover or flyby. It was simply a straight line to the waypoint and just before the line did a complete 360 before hitting the waypoint

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did a complete 360 before hitting the waypoint

 

The technical term for that is a "Whifferdill." (Okay, that's what we've always called it, anyway.) That usually means there's a fix out of order or something. Fine for airshows, not for airlines.

 

Post some pics!

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After programming the fmc with the peble 4 STAR from San Diego the fmc path includes a spiral to the medley waypoint. Is there a way to correct this? I don't believe actual planes do this

Does it look like a holding pattern? Because i get them just have to delete the last waypoint in that spiral or holding pattern

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