How to implement RF legs with arc center point/fix?

Hi everyone, I hope this time someone knows how to do with this question. As
FlyByWire released their new custom flight plan manager, all my RF legs from
the procedure I created are ignored because I did not declare any arc center
point. Below is a picture of one of the procedure arcs and the code I modified
to add the arc center point (I calculated the arc center fix as the center of
the circle which the arc is part of). Here I used recommendedIdent Region and
Type for the center point as for AR legs where the recommended Ident is the
DME itself (so the arc center point…), but seems it is still not working. I
just paste concerned lines, of course the structure of the file should be ok
(waypoints declared inside airport and below legs are parts of TransitionLegs
of an approach) XML:

<Waypoint lat="29.1720039" lon="93.5527956" magvar="0.5" waypointType="RNAV" waypointRegion="ZU" waypointIdent="LZ203"/>
<Waypoint lat="29.1531323" lon="93.6528785" magvar="0.5" waypointType="RNAV" waypointRegion="ZU" waypointIdent="LZ201"/>
<Waypoint lat="28.8883336" lon="93.5359033" magvar="0.5" waypointType="UNNAMED" waypointRegion="ZU" waypointIdent="C0301"/>

<Leg type="TF" fixType="TERMINAL_WAYPOINT" fixRegion="ZU" fixIdent="LZ203" flyOver="TRUE" magneticCourse="93.0" altitudeDescriptor="+" altitude1="18500.0F"/>
<Leg type="RF" fixType="TERMINAL_WAYPOINT" fixRegion="ZU" fixIdent="LZ201" recommendedIdent="C0301" recommendedRegion="ZU" recommendedType="TERMINAL_WAYPOINT" theta="21.2" flyOver="TRUE" turnDirection="R" magneticCourse="0.0" distance="5.4N" altitudeDescriptor="+" altitude1="16400.0F"/>

Arc is from LZ203 to LZ201 and the center point I calculated is C0301. I took
theta as the heading of LZ201 from C0301 (as it is for AR legs). By the way it
also does not work if I define theta as the angle of the arc. Hope anyone
could help or at least get any clue as all procedures I made, that were
working before, will be quickly out of use…Should I precise that this
project is for free (already on so no
business here, just personal as some procs are not included inside AIRACs for
this airport I like to fly to. Many thanks to the community, Chris


  • arc.jpg 56.7 KB · Views: 3

Problem solved as some arguments of Leg were not indicated in the
documentation, but I found someone that informed me about the
arcCenterFixIdent, Region and Type that can be used.

subject closed