Flight rules: Difference between revisions

'''Despite''' many articles on the internet telling an aircraft has to fly a specified altitude when flying a magnetic course and [[VFR]] or [[IFR]] there is not '''ONE''' rule for the world!!!  

One system uses [[AGL]] as reference, the other [[AMSL]], one system separates with 500 feet intervals, the other at 1000, one uses indicated altitude, the other absolute altitude. Check the rules that apply and ask [[ATC]] what altitude to fly (and on what reference).

Below a specified altitude the pilot has to set the altimeter on QNH, above the specified altitude on Standard Pressure. The moment when to reset the altimeter is named the Transition altitude and it differs from country to country, some use 18000 feet some use 3000 feet and there are many variations in between. To add to the confusion some regions require the [[flight level]] in meters, most in feet.