Are there rules for persons with reduced mobility that airlines should follow?
Yes there are. IATA and its members have a resolution in place that lays out service standards for passengers with reduced mobility on journeys involving 2 or more airlines (interline journeys). The resolution specifies how airlines should communicate passenger special needs and what services should be provided on the ground and in flight. It requires that airlines have special equipment made available when necessary, calls for priority boarding to be offered and for airlines to ensure that passengers with special needs receive individual briefings on safety procedures, aircraft layouts and specialised equipment available on board. It also provides a general requirement for passengers with reduced mobility to be attended throughout the entirety of an airport transfer.