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FS2004 Flight plans and waypoints

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167
Country
unitedstates
When I use a AIFP to create flight plans, how does it know what the proper highways in the sky and approach paths are from airport to airport?

How does it know not to make flight plans that are just going to go from airport to airport in a straight line?

And if I want to change a waypoint to slightly change its approach path to an airport how do I do that within AIFP when putting together a flight plan?
 

gadgets

Resource contributor
Messages
8,985
Country
ca-britishcolumbia
how does it know what the proper highways in the sky and approach paths are from airport to airport
An AI aircraft flies directly from sector boundary to sector boundary, or from sector boundary to the start of approach, or from end of takeoff to sector boundary. Where the approach starts or takeoff ends depends on whether you have selected IFR or VFR. The point at which the a/c crosses sector boundaries, and the time it should do so, is determined by the AIFP compiler based on a great circle route from origin to destination and the specified (in the flight plan) cruise speed of the aircraft . However, the aircraft only "flies" when in the same sector as the user aircraft or an adjacent sector.

Section 12 of the V3 User Manual (or section 4 of the V2 manual) gives more detail that may be of interest to you.

How does it know not to make flight plans that are just going to go from airport to airport in a straight line?
As noted above, AI doesn't actually fly the route except in the presence of the user aircraft - and then it flies a direct route.

if I want to change a waypoint to slightly change its approach path to an airport how do I do that within AIFP when putting together a flight plan?
You can't. To change the approach path you must revise the approach for the airport, i.e., you change the airport, not the flight plan.

Don
 
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