Perhaps have a look at
www.ch-aviation.com and see if an online subscription to that would be suitable? Looks like $99 for one year.
I know you asked for 'magazines' but they're all pretty crap these days.
Av Week is the only one that really does any investigative reporting any more but it's very slim every week. I used to read it in 20 minutes.
The Airline __ ones are fiercely expensive if you're not in the industry, since you're basically subsidising the thousands of free copies they hand-out to executives