FMS - Radial Intercept

[Stefan]

Hi Philipp,

when departing from LGSM via the ORMO2B.09, a problem occurs with intercepting the R174 SAM.

After passing the (420)-restriction, the (INTC)-point gets lost and no further attempts are done, to intercept the radial.

the next wpt is the (4000)-restriction.

after passing (420) i would expect right turn to hdg 204 until intercept of R174 SAM, but fms continues rwy-hdg until passing (4000).

what's a little bit strange for me, is the legs-display, which shows 177deg for the (INTC) - which seems to be the direction to the calculated interception from the current position - instead of 174 (radial).

<Sid Name="ORMO2B.09" Runways="09">

<Sid_Waypoint ID="1">

<Name>(420)</Name>

<Type>ConstHdgtoAlt</Type>

<Latitude>0.000000</Latitude>

<Longitude>0.000000</Longitude>

<Speed>0</Speed>

<Altitude>420</Altitude>

<AltitudeCons>0</AltitudeCons>

<AltitudeRestriction>above</AltitudeRestriction>

<Hdg_Crs>0</Hdg_Crs>

<Hdg_Crs_value>092</Hdg_Crs_value>

<Flytype>Fly-by</Flytype>

<BankLimit>25</BankLimit>

<Sp_Turn>Auto</Sp_Turn>

</Sid_Waypoint>

<Sid_Waypoint ID="2">

<Name>(INTC)</Name>

<Type>Intc</Type>

<Latitude>37.687778</Latitude>

<Longitude>26.907500</Longitude>

<Speed>0</Speed>

<Altitude>0</Altitude>

<AltitudeCons>0</AltitudeCons>

<AltitudeRestriction>at</AltitudeRestriction>

<Hdg_Crs>1</Hdg_Crs>

<Hdg_Crs_value>204</Hdg_Crs_value>

<Flytype>Fly-by</Flytype>

<BankLimit>25</BankLimit>

<RadialtoIntercept>174</RadialtoIntercept>

<Sp_Turn>Right</Sp_Turn>

</Sid_Waypoint>

a short cross-check with vasFMC also was not succssfull.

it does the correct right-turn to 204, but turns left to a 174 deg HEADING on a parallel offset course to the R174 SAM (which may come from an inconsistency of navdata between x-plane and navigraph). the following right-turn is only initiated after passing (4000), the 10 DME-restriction is ignored (maybe not present in the nav-data).

Regards,

Stefan

[philipp]

Stefan, please check your mail inbox. I need your dedication to bug finding in the current test setup, where it will help the CRJ more.