Buku ini berisi mengenai perjanjian dan kesepakatan penerbangan
The material contained in this circular is aimed at the control of aircraft engine emissions in the vicinity of aerodromes. It seeks to achieve this end, in the case of gaseous pollutants, by limiting the amount of pollutant emitted during a reference landing and take-off cycle. To make allowance for the useful output of the engine, the limiting level of pollutant is related to take-off thrust.