I know this is very late notice, but I've just found out [maybe I've been living in a cave??] that the Lifeflight Open Day is on tomorrow, Sunday 14 April, from 10am to 2pm. The open day is held at their Wellington airport base, on the Lyall Bay side of the airport. I will probably be there in the afternoon and hope to have a few pictures to share.
I went last year, and it's good to have a look around and a worthwhile cause to support. Here's a link to the Lifeflight Open Day webpage, which includes a video from the last one.
Now if only Lifeflight would ask me to participate in the winching demo :-) that would be exciting.... and great for photos also :-)