Dallas wrote
Interesting note... the guy's name is Joseph Andrew Stack.

The FAA registry lists no one by that name with a certificate. It
will be interesting to see if he was a student pilot or if he just
figured out how to fly today.

From the AP
Stack's medical certificate was current, dated May 2009. He was an
instrument rated pilot, able to fly single-engine and multiengine
airplanes, and no enforcement action had ever been taken against him.

Bob Moore