These things are a real problem for everybody. It starts with the booking. For a start, some aircraft are unable to accept a wheelchair outside certain dimensions. The next problem is the design of the chair vs company and national safety regulatiins. The lack of standards means that before flight every wheelchair has to be assessed by people ill equipped and with insufficient time to do the job. This results in gross abuse of the chair when loading. I find the easiest way is to get the owner to tell you how it should be dismantled.
I truly realise that wheelchairs are critical parts of some people's lives. Airlines, their agents and handling companies should do more to look after them and I apologise to those who have been affected by our poor service. I wish I could do more.
PM