KOREAN AIR HAS said it will revise its guidelines to allow crew to use more force against passengers.

Reuters reports the airline said crew members will be able to “readily use stun guns” to manage unruly passengers as part of these new guidelines. It will also try to have at least one male flight attendant on duty for each flight.

The review comes after 80s pop singer Richard Marx revealed how he helped “ill-trained” crew on a recent Korean Air flight subdue a violent man on board.

Marx said he and his wife were flying from the Vietnamese capital Hanoi to Incheon airport, the South’s main hub, when a passenger started physically attacking another passenger sitting next to him and the crew members.

“Passenger next to us attacked passengers and crew. Crew completely ill trained,” Marx said on Twitter, posting a series of photos showing him trying to hold down the unruly passenger.

Marx said the fiasco lasted four hours until he stepped in along with other male passengers.

Korean Air President Chi Chang said Asian culture has meant carriers in Asia did not impose tough standards in relation to violent passengers like US airlines have, Reuters reports.

However the airline has said it will use this latest incident to strengthen its safety standards.

- With reporting by AFP.

Read: 80s singer Richard Marx helps restrain unruly passenger with rope on board Korean airplane>