PRO

TRUE ALTITUDE #

This is a module helping you to calculate your true margin within relief, according to real atmosphere. As real atmosphere differs from standar atmosphere, your true altitude depends on QNH and temperature.

1. set present FL and SAT to calculate ISA T°. Then, lock ISA toggle.
2. set QNH and MOCA altitude
3. set FL to your level off altitude

TRUE SPEED #

In a similar way, true speed depends on altitude : select your IAS indicated airspeed, altitude, QNH and temperature, and read your true airspeed.