Required navigation performance (RNP) area navigation (RNAV) approach capability enables lower decision heights with the same level of safety, and shortens procedural approaches, saving time and fuel, says Canadian operator WestJet. WestJet uses Next Generation Boeing 737s approved by Transport Canada for an RNP of 0.1nm (185m) lateral accuracy, but RNP RNAV approaches could be achieved "in many airframes" to higher levels than are available at present, says Seattle-based RNAV specialist Naverus, whose work with Boeing on approach design and specific aircraft performance enabled WestJet's clearance. Naverus is working on RNP RNAV with several operators, says Naverus, but it will only divulge at this stage that Qantas is one of them. Qantas was not able to comment by the time Flight International went to press.
Source: Flight International
