What should a cabin crew member do if a passenger is choking onboard an aircraft?

If a passenger is choking onboard an aircraft, a cabin crew member should first assess the situation to determine if the passenger can speak or breathe. If the passenger is unable to do so, the crew member should perform the Heimlich maneuver (abdominal thrusts) if trained to do so. Additionally, they should alert the flight deck and call for medical assistance, while monitoring the passenger's condition until help arrives. If necessary, crew members may also use the onboard medical kit to assist.