Quick question, when trying to track Boeing aircraft such as the B707, 727, and 747, no results are received. I realize there are few 707s left but was hoping to track a heavy like the 747. I do get results for the 737, 757, and 767.
Great site!
Try searching for 70*, 72*, and 74*. Aircraft filing IFR usually use the aircraft model code such as 738 to indicate 737-800 (a 737 is a 737-700) rather than the “family” code of 727 or 747.