NEPAL Koirala Returns Home C K Arora IT was a slick operation. Hardly had the Royal Nepal Airlines' Patna-Kath- mandu flight touched the sun-kissed runway of Tribhuvan airport when the aeroplane was signalled to the farthest end of the tarmac instead of being permitted to stop in the regular park- ing bay. The plane was finally berthed behind a stationary aeroplane. Obviously, the idea was to block the view from the visitors' gallery at the terminal building. Earlier, one of the entrances to the aerodrome was covered by a huge canvas screen.