** Shares of Auckland International Airport AIA.NZ falls as much as 1.8% to NZ$7.870, their worst intraday drop since April 22
** Airport operator announces an updated Master Plan showing that the anticipated timeframe for the second runway has been extended by a decade
** Chief Strategic Planning Officer says that construction will only commence if it is in New Zealand's "best interests"
** AIA last down 0.8%, take YTD losses to 8.6%
(Reporting by Kumar Tanishk in Bengaluru)
((Tanishk.Kumar@thomsonreuters.com; X: @thatstanishk http://www.x.com/thatstanishk;))