I'm looking at B19 in Maine, and it recommends a Traffic Pattern Altitude (TPA) of 995 MSL (800 AGL). Wouldn't 1,000 AGL be safer?

  • $\begingroup$ I'm sorry, but what is "TPA" in this context? I don't think you're referring to Tampa International Airport, and beyond that I'm coming up blank for that acronym. Also, what is B19? Can you post a screenshot of what you're seeing? That would be helpful. $\endgroup$
    – Ralph J
    Commented Jun 12, 2020 at 1:03
  • $\begingroup$ Welcome to aviation.SE! We have a couple of closely related questions: here, here. Does one of them help? $\endgroup$
    – Pondlife
    Commented Jun 12, 2020 at 3:59
  • $\begingroup$ @RalphJ "TPA" is "traffic pattern altitude", and B19 is the airport identifier for the Biddeford Municipal Airport in Maine $\endgroup$ Commented Jun 13, 2020 at 12:59

1 Answer 1


B19 is close to the Portland class C airspace, which starts at 1500 MSL, so a TPA of 995 MSL provides 500ft of vertical separation.


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