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STAR approch


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Hi,

 

The route is

EKYT

RADIS P615 LUTUS T55 ROSBI

EKCH

 

FL190 or FL210

 

then adding runway 22L / Arrival ROSB3C

then adding runway 22L / Approch ILS rwy 22L / transition KAS - this has no influence, just to get the full picture.

 

When EKDK_CTR is online on VATSIM I'll be told to decend FL100 in good time before TNO(part of the STAR). But, the T/D is very short before TNO. So if I do nothing I'll be too high for EKCH_APP to handle in a normal procedure.

 

This works perfectly if I select ROSB3N arrival.

 

br,

Leif

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Leif,

thanks for the route and the explanation. The difference between the two arrival routes is that ROSB3C ends with "vectors" (which is an "unknown" position) whereas ROSB3N ends at a known position (LAMOX). EFB cannot determine the distance that must be flown if the end point is not defined and therefore it cannot adjust the T/D.

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Leif,

 

today I finally found the time to fly the route you provided. The answer from my last post seems to be wrong (one should not give an answer without having a look into the source code ;-)).

 

I used a default 737 for this flight. Cruise level has been set to FL210 and initially I didn't add neither a STAR nor an approach. Above 10'000 feet I set a speed (IAS) of 290 kts on the MCP. This gave me a groundspeed of 385 kts when I reached T/C. At this point the T/D was calculated to be just at "ROSBI". While on cruise level I added the STAR (ROSB3C) and the approach. The T/C has then been recalculated to be approx. 8 NM from TNO towards to my position and also on the chart it was clearly evident that the T/C has been moved. 20 NM before T/D the FIP showed a descent rate of -2400 ft/min to be at FL120 at TNO. I reached TNO exactly at FL120 with a groundspeed of 340 knots only followed the instructions given by the FIP.

 

In my opinion there was nothing wrong nor was anything missing nor is it a bug (maybe I didn't understand exactly what the problem on your flight was?)

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Leif,

 

I just made a short flight from Billund (in the default 738 as well) using the ROSB3C STAR programmed at the gate. After a quick TOC of FL170, I approached TNO and the Flight Information System scheduled my descent using TNO and the FL120 restriction there.

 

[attachment=0]tno.png[/attachment]

 

So while it should work for you, we will have to do a little more investigation to find what our differences are. Exactly how have you used this - have you tried a test flight with the STAR entered, or do you always add it while enroute? Has it always failed - even with older Airac cycles?

 

Regards,

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