I'd imagine that if it's good enough for Boeing, it's probably good enough for us.
http://seattle.craigslist.org/kit/mat/2619112964.html
From the ad:
"18 4'x8' sheets of 1/2 plywood clad both sides with aluminum. Aluminum is .04 inch thick, 2024 T3 aircraft-grade high-strength alloy. Sheets are high-quality hardwood based without voids. The aluminum glued on both sides to plywood creates a lightweight but very rigid panel (the same principle as an I-beam). Or, kind of like a very thin & light SIP panel. This unique material is unused, was an overrun from a Boeing special order - the panels still have the protective plastic film over the aluminum. I was planning to build a shed with it but we moved - now you can do it for even less $, or create whatever you imagine. A giant kids slide? Work tables? A trailer, boat or other vehicle??
Looking to sell all 18 sheets for $1260 ($70/sheet)... well under salvage value for the metal alone but I'd like to see them get used not just ripped up."
