If Current QNH will show you elevation at airdrome when youre on the runway, shouldn't it read 0 above sea?
Yes, I am very sure of that if temperature is 15c
When youre at std 1013, and change to QNH which is 1030.
Changing from low to high gives you a lower alt.
LOW - HIGH - LOW
Just making sure this is correct.
Somehow correct, if you are looking at your altimeter reaction while you are changing the setting,your indicated altitude will go up,hence you will be lower.If you dont change your setting while you enter a low pressure ,you will be lower than indicated.
Remember of Altimeter errors though
Ditching is a visual maneuver.