Hong Kong Airlines, which launched service to Moscow last year, has begun training its cabin crew in a form of kung fu called Wing Chun to deal with drunk and unruly passengers.
The airline said disruptive-passenger incidents occur three times per week on average.
A close-range martial art, Wing Chun is well suited to the confines of an airplane.
Hong Kong Airlines is not the first airline to require its crews to learn a martial art. Another Hong Kong-based airline, Cathay Pacific — which also launched a Moscow route in 2010 — already includes self defense in its regular crew training program.