Nobody has actually said who is flying the sizing trials. Most likely,
it is the manufacturer as part of the certification process verifying
range, etc.

"G Farris" wrote in message
...
In article . com,
says...


With the airplane only halfway through the certification process,
how can a
commercial company be flying between city pairs for sizing trials?

There is no requirement it be certified. It probably has a big sign on
the door that says "Experimental". Lots of those flying around all the
time.

Lots of airliners delivered to paying customers prior to type
certification?
I'm slow - show me.