Quadrant flight rule
The quadrant flight rule ( English quadrantal rule ) was the British variant of the semicircle flight rule applied in Germany in air traffic until April 2, 2015 . It served to distinguish ("stagger") air traffic in different directions. In contrast to the semicircle flight rule, which differentiates between two main directions and IFR and VFR traffic, the quadrant flight rule had four main directions, but did not differentiate between types of traffic. As part of the Europe-wide harmonization of flight rules, the quadrant flight rule was replaced by the semicircle flight rule on April 2, 2015.
The Quadrant flight control was above the transition altitude (transition altitude) or above an altitude of 3000 feet AMSL and to the flight level 245 is used. (In addition, due to the increasing inaccuracy of the altitude measurement, a semicircular flight rule applied.) The rule was binding for IFR traffic and recommended for VFR traffic.
| magnetic course | Flight altitude according to quadrant flight rules |
|---|---|
| 000-089 | odd thousands (3000ft, 5000ft, FL70, FL90, ...) |
| 090-179 | odd thousands + 500 (3500ft, 5500ft, FL75, FL95, ...) |
| 180-269 | even thousands (2000ft, 4000ft, FL60, FL80, ...) |
| 270-359 | even thousands + 500 (2500ft, 4500ft, FL65, FL85, ...) |
literature
- Trevor Thom - The Air Pilot's Manual , Aviation Law and Meteorology, Volume 2, Airlife