At an altitude of 6,500 feet MSL and with the current altimeter setting is 30. 42" Hg. the pressure altitude is mathematically given as
PA=6500ft
Generally, the equation for the Pressure altitude is mathematically given as
PA = ( 29.92 - AltSet ) * 1000 + FieldElev.
Therefore
PA= (29,92 - 30.42) * 1000 + 6,500
PA=6000ft
In conclusion, pressure altitude
PA=6500ft
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