money
Maybe it would be more productive but I already know how to write cheques as my bank manager will testify.
What I am after, are details of how to fly as a volunteer using my qualifications and experience. I don't care any more or less than people watching on TV but I'd like to get involved, if possible. I know this works for dog handlers, paramedics and doctors so why not internationally qualified helicopter pilots?
Can't speak for UNICEF, but knowing a few senior charity managers for other well known charities I know that a lot of money doesn't leave the administrators' desks. 'That's the only way to get the quality of staff' being one reason given for high charity salaries. If I put time in, I know that it's not being wasted, even if it isn't as productive as a highly paid city boy.