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According to ICAO circular 288 "Guidance Material on the Legal Aspects of Unruly/Disruptive Passengers", the protocol aims to tame cases of passengers who fail to respect the rules of conduct aboard aircraft or to follow the instructions of crew members and thereby create a threat to flight safety and/or disturb the good order and discipline on board aircraft.
The circular said that incidents of that kind had been increasing over the years. According to the International Air Transport Association (IATA), there were over 58 000 reports concerning unruly and disruptive passengers between 2007 and 2016.
"During this time, there has been an upward trend in unruly and disruptive passenger reports with an average of one incident for every 1 424 flights in 2016," the circular said.
Some of the incidents cited by IATA include assault on crew members or passengers, fights among intoxicated passengers, child molestation, sexual harassment and assault, disorderly conduct as a result of alcohol intoxication, illegal consumption of drugs on board; and the refusal to follow a crew member's lawful instruction.
Others include the ransacking and sometimes vandalising of aircraft seats and cabin interiors; unauthorised use of portable electronic devices; destruction of safety equipment on board, and other disorderly or riotous conduct.
"It has been noted that what generally happens in the street is now happening on board aircraft," the ICAO report noted.
According to ICAO, the incidents are not restricted to a particular airline, state, customer category, class of service, or length or type of flight.
In several cases, the acts and offences directly threatened the safety of the aircraft.
In some cases, the pilots had to make unscheduled stopovers to disembark the unruly and disruptive passengers for safety reasons. ICAO Secretary General Juan Carlos Salazar received Kenya's instruments.
The conundrum of prosecuting unruly passengers
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