HIGH flying air hostesses are being taught high kicking kung-fu skills - to deck drunk passengers who try to grope them. The Chinese stewardesses are taking classes in deadly Wing Chun which teaches students how to knock an aggressor out cold within seconds. Airline bosses say their flight attendants have to deal with at least three cases a week where amorous drunks try to paw them. It is for their own safety and the safety of other passengers that they learn how to defend themselves. This kung fu works best at very close range so it is ideal for a plane, said instructor Sifu Lu Heng. ON