well it was a barbie jet...didn't mention that...
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You say you cant understand how a 21 y/o considers themself ready for a command....if a 21 y/o has the nessesary hours, passes the command assessment, has a good route and aircraft knowledge and generally has a bit of common sense...why is that different from a 40 year old with the same hours? Of course the 40 y/o has naturally 'tucked more away'...but that doesn't mean the 21 y/o wouldn't be a good operator.
I'm under no illusion that everyone has alot to learn as they grow up and gain experience, but you either have an assessment process that works or it doesn't.
I shouldn't bring up the 24 y/o TRI that i know of.......should I??