I have been using CPAP for a few years. I also want to use it on long hauls. However, every time I need to explain to various departments when I make the request. I have the same problem on my HKG-YVR flight on Tue. Tried to explain to the reservation agent, she did not know what I was talking about. She just said she will make a note on the PNR. And that was what she did. When I check-in at the airport, they need to get someone from the engineering department to come out and check the machine.

Is there any way so that I can avoid all these troubles?

Also , does anyone know the seat number for medical plugs on 74A and 33B. For 77A I know it is 3K and 26K.

Many thanks.