I am one of the pilots here, and I love having the autoemailed requests for transport. However, I don't think it's working right, or I have something set wrong in my profile that I can't find. I am in Dayton, OH, and routinely get autoemailed notifications of transports that don't come anywhere near Dayton. I know about the setting under my profile of "distance I'm willing to travel oneway", and I keep adjusting it to see if that helps, but it doesn't seem to. Currently it's set at 75nm (which I'm certainly willing to fly farther than, but I was trying to see if it made a difference).
Today I got one notification for Birmingham, AL to South Burlington, VT, for which a direct line between the two, comes at the closest 141 nm away from me. And this is fairly normal. A week or so ago I got one for Nebraska to somewhere in California, I think, so the complete opposite way!
Is there something I'm missing in the profile settings, or does the automated email function just not work very well?
Thanks,
Russ
Why do I get requests from far away?

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Re: Why do I get requests from far away?
Its the way the calculation is done. Assuming you use 75 miles, the system will notify you if diverting to your airpoprt would increase the length of the trip by 75 miles or less.
I use a formula that can calculate the distance betweentwo lat/lon pair, so I calculae the length of the trip (d1), and calculate the trip length using your airport as a stopping point (d2) and (d3). If d1 + 75 is less than d2 + d3, you get an email.
If someone can come up with a formula to find the distance to a courseline from a particular airport using php functions, I can incorporate it into the program.
I use a formula that can calculate the distance betweentwo lat/lon pair, so I calculae the length of the trip (d1), and calculate the trip length using your airport as a stopping point (d2) and (d3). If d1 + 75 is less than d2 + d3, you get an email.
If someone can come up with a formula to find the distance to a courseline from a particular airport using php functions, I can incorporate it into the program.
Re: Why do I get requests from far away?
Interesting, thanks for the response! I had no idea what was going in to the calculations.
I don't know what formula went into it, but the FAA has an Excel calculator to do basically what you want at
http://www.faa.gov/about/office_org/hea ... rps_tools/
use the "Ellipsoidal Calculator Spreadsheet".
The "Three Points" tab would return the desired values: A = the origin airport, B = destination, C = your airport, and it will return "y" which is the distance to courseline. This is one of the calculators used to assist in instrument approach procedure design, so it should be accurate.
Unfortunately, the spreadsheet is passwordprotected. Maybe the contact information at their main page, http://www.faa.gov/about/office_org/hea ... 00/afs420/
will help get you the formula that goes into it.
I know nothing about php or even if it's implementable from this Excel formula, but figured I'd offer that suggestion.
I don't know what formula went into it, but the FAA has an Excel calculator to do basically what you want at
http://www.faa.gov/about/office_org/hea ... rps_tools/
use the "Ellipsoidal Calculator Spreadsheet".
The "Three Points" tab would return the desired values: A = the origin airport, B = destination, C = your airport, and it will return "y" which is the distance to courseline. This is one of the calculators used to assist in instrument approach procedure design, so it should be accurate.
Unfortunately, the spreadsheet is passwordprotected. Maybe the contact information at their main page, http://www.faa.gov/about/office_org/hea ... 00/afs420/
will help get you the formula that goes into it.
I know nothing about php or even if it's implementable from this Excel formula, but figured I'd offer that suggestion.