New Delhi, April 22 -- The Union home ministry has turned down a request to tweak rules to allow a foreign national to hold the post of chief executive of a greenfield airport, multiple officials aware of the matter told HT - a decision that affects the upcoming Noida airport. The airport, developed and to be operated by Yamuna International Airport Pvt Limited, is a subsidiary of Swiss firm Zurich Airport International AG with Christoph Schnellmann as its CEO."The MHA is not in favour of allowing expats to be the CEO of a greenfield airport," one of the officials said, asking not to be named. A letter seeking to amend the rules - which mandate that the chief executive of a greenfield airport be an Indian national, on grounds of air operati...