just wondering ?

[AshG]

planes are not welded for a start so there is no haz, they are made with screws rivets and glue. if you look back a bit into the history of planes there has been plenty of issues with ali fatigue look at the de Havilland Comet, they had a habit of falling apart in the air as did a fair few other planes that were conceived in the 50's. a lot of the new planes manufactured these days are made out of composite materials which are much stronger and lighter.

ali is a fantastic material but its really not suited to use on a chassis unless you can model it and do some fea to work out the issues due to the shortcomings of the material