Hi This question concerns high altitude airports, thinner density and indicated speed vs. true speed vs PMDG 737 planes. ".....density altitude affects the landing performance of an airplane High temperature and high elevation will cause an increase in the landing roll because the true airspeed is higher than the indicated airspeed. Therefore, even though using the same indicated airspeed for approach and landing that is appropriate for sea level operations, the true airspeed is faster, resulting in a faster groundspeed (with a given wind condition). The increase in groundspeed naturally makes the landing distance longer and should be carefully considered when landing at a high elevation field, particularly if the field is short........" My question is as follows: Is this crucial fact integrated in pmdg 737 package? Will indicated air speed [iAS] really be slower than true air speed [TAS] when choosing high altitude aerodome in FSX? Sincerely