@Mark Thanks for the reply. As indicated in the edit to my post, I find the arrivals at larger airports (MYNN is the example) to be reasonably accurate though I realize this is probably not comparable to the larger airports you must be referencing. On the other hand, is all this fancy coding having a detrimental affect on small airports? Why would arrival time be delayed at an airport with few daily arrivals? A list of examples follows:
MYNN - Saturday
Southwest 1867 Arrival scheduled 12:05, Landed 11:48, -12 minutes
American 1428 Arrival scheduled 12:08, Landed 11:54, -14 minutes
Delta 1907 Arrival scheduled 12:13, Landed 12:00, -13 minutes
American 2877 Arrival scheduled 12:30, Landed 12:05, -25 minutes
Virgin 107 Arrival scheduled 12:50, Landed 12:13. -37 minutes
MYAM - Saturday
American 3443 Arrival scheduled 12:01, Landed 13:09, +68 minutes
Western 604 Arrival scheduled 13:00, Landed 13:41, +41 minutes
MYAN - Tuesday (schedule by User)
Makers 101 Arrival scheduled 10:00, Landed 11:37, +97 minutes
Makers 301 Arrival scheduled 11:00, Landed 12:18, +78 minutes
I realize that FS Traffic is only intended to add realistic looking aircraft activity at the user's departure and arrival airports for a short period of time, and accuracy may not be important. Separately scheduled departures and arrivals results in duplicated parked aircraft, perhaps enhancing the experience at large airports with lots of parking spaces. The FS Traffic methods just don't work very well for me at small airports.