When is manual QNH advisable?
You would want to use Manual QNH either in a competition or where you have a very reliable take off altitude to use as a reference.
You can use manual QNH by setting the takeoff altitude, or by setting the QNH manually.
You would want to use Manual QNH either in a competition or where you have a very reliable take off altitude to use as a reference.
You can use manual QNH by setting the takeoff altitude, or by setting the QNH manually.