Key Points Heathrow have submitted an ACP (Airspace Change Proposal)2 to the CAA to implement, by 2022, the very first ever permanent PBN (Precision Based Navigation) route, out of Heathrow, on the easterly Compton departure route, affecting Englefield Green, Egham, Virginia Water, etc. The existing Compton SID (Standard Instrument Departure), see Fig. 1, has not been flown for […]