
Heathrow is introducing narrower flights paths using a new way of guiding planes in and out of the airport.
Performance Based Navigation (PBN) uses satellite navigation, rather than conventional navigation techniques based on ground-based beacons.

Heathrow is introducing narrower flights paths using a new way of guiding planes in and out of the airport.
Performance Based Navigation (PBN) uses satellite navigation, rather than conventional navigation techniques based on ground-based beacons.