Can you imagine trying to pull that off in the days prior to GPS? The closest you could get would be if you drew it out on sectional and followed off of the benchmarks on the ground. Very impressive, due to how really small an area he was working with.
This was an incredible tribute (I believe) to the people of Houston, after what they went through before, during, and obviously after Hurricane Harvey! VERY VERY NICE!
Am I the only one that thought it was 100% to scale and wondered how the hell a Cherokee did that? Of course, I clicked through and realized it's not Texas-sized. :)
Going to get a hamburger rarely makes a Flightaware top squawk. But in all seriousness, there's a lot of good hurricane relief happening with GA right now in that part of the world. If someone wanted to burn some avgas and/or log some time, seems like there could have been a more meaningful mission.
Or you could just google the name of the operator from the aircraft info block and find that COWLIN AVIATION LLC is a flight training service and have a post of their flight track on their Facebook page that says they did it for training.
"Did you catch our awesome #Texas #longhorn training flight yesterday?" https://www.facebook.com/CowlinAviation/
I think it was probably done for the pure enjoyment, the satisfaction of doing something very cool and the simple pleasure of flying! Nothing more or nothing less. Certainly not an endurance test flight, flight time was only about two and a half hours.
Your comment "Not legal to haul part 121 cargo on such a flight. Get real or get educated" is quite puzzling. FAR Part 121.159 prohibits the use of single engine aircraft. It has nothing to do with "such a flight" as you stated. I won't quote your last sentence. ;-)
There are regs for delivering goods. If you accept ANY money, it is illegal as you are now a pay-for-hire flight. The pilots/owners MUST pay for everything, no donations. Maybe it's Part135. I shot a bit from the hip.
If someone wants to draw Texas in the sky near Houston, it's their business. I was annoyed by that post from layman. Looks like I wasn't alone.