Qatar Airways A320. By Rob Finlayson Qatar Airways is the first carrier to use the new Required Navigation Performance-Authorization Required (RNP-AR) approach into Kathmandu’s Tribhuvan Airport. RNP-AR enables aircraft—in this case an Airbus A320—to automatically fly accurate trajectories without relying on ground-based navigation aids.  Kathmandu has one of the world’s most complicated approaches because of challenging terrain associated with its ...

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