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Minumum Safe Altitude

chris

chris

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855
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indonesia
Ok, the airport is built (thanks to FSX Planner), the traffic is moving, but the shuttle service to the nearest major airport, which is only 35nM away, is being adjusted to fly at ridiculously high altitude. The problem being "...TrafficDatabaseBuilder uses a course grid of minimum safe altitudes..."
I see lots of posts relating to it, but none say how to overcome it.
Anybody here any ideas?
 
You could use a program like AI Flight Planner, open the trafficAircraft.bgl file in FSX Root Directory/Scenery/World/Scenery, and modify the routes, including the flight level.

Another option is to recompile the flight plans, but that might just give the same result.
 
"...open the trafficAircraft.bgl file in FSX Root Directory/Scenery/World/Scenery, and modify the routes, including the flight level..."
You just gave me food for thought. First thing to do was search the web for a guide to decoding biggle files. Nothing. So after twenty minutes work I've figured out the altitude coding;
Open trafficAircraft.bgl with your favourite hex editor (I use XVI32 2.51). Search for your tail number, you'll find it in ascii. Just behind that you'll see the ICAO code for the destination airport, again in ascii. Directly behind this are two hex characters. These are your altitude in FL (in reverse order of course).
e.g.
CustomAircraftSchedules.Dat entry;
{
0130,VVVT,320
0430,WIII,330
}
trafficAircraft.bgl entry;
56 56 56 54 40 01________V V V T @ ?
...
...
57 49 49 49 4A 01________W I I I J ?

Now the traffic can get to its cruising altitude before ATC brings it down.
Sometimes I just need pushing - Thanks.

p.s. I should mention I haven't tested this yet. I'm at work. I can get away with this but running FSX is a bit of a giveaway that you're not working.
 
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Ok, works fine. But it's a bit of a kludge. I'd still like to know how to stop TrafficDatabaseBuilder setting the minimum safe altitude.
Anybody any ideas?
 
As far as I know, if you have reasonable altitudes set in TrafficAircraft.csv file, I believe, and the aircraft.cfg files are reasonable (for example, it doesn't say it has a maximum altitude of FL800), then I think it should result in appropriate values for the altitude.


It is possible that there may be some other error that could result in these altitudes.
 
If I create a flight plan between the two airports (which are only 35nM apart) the planner recommended altitude is a comfortable 3000ft one way and 4000ft the other. The highest terrain around is 300ft. TDBB will not allow altitudes of less that 8000/9000ft for the AI traffic. For a small aircraft you can't reach these altitudes before ATC is bringing you down to 1800ft (in this case) for approach.
 
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