Facebook has a very good page dedicated to the HU-16 series, I won't post the link here, so contact me with a DM or send me a PM and I'll tell you how to get there. I'll get back to you later on it.
The page owner is good friend and I'm an Admin, he has a digital copy of several HU-16/UF-1...
Tex Johnson's Barrel Roll was a normal positive 1G roll. There was no strain on the airplane at all, it was exactly the same as if he'd been flying straight and normal.
In fact, talking to him many years later he told me they did two of them out over the Olympic Mountains out of sight just to...
They've been there for a while, he wanted them to be anonymous donations. They weren't revealed until after his passing.
I assisted in the Goose restoration with colors and markings last year.
Outstanding work. I've done XL lists for the Grumman Widgeon and Goose, but nothing like that. Only Prod. numbers, registrations, whether I have images of them in my files or not and engine changes for the Widgeons. And that was a big enough PITA, only 600+ airplanes (the Mallard is next).
Search for images on DuckDuckGo. There area lot of them, mostly N14048, but also a link to the WACO page on the airplane inc. the prototype and some of the Cuban and other users S3HD's too.
The FAA posted an AD (Airworthiness Directive) mandating an immediate inspection (NOT an immediate grounding) of the wingroot attach points on all US B-17s. The US aircraft that were grounded (not all were, it was voluntary) were out of an abundance of caution after one airplane was found to...
Near as I can figure out 8 of the 10 had the ski. all but 9305 and 9309 had them, BUT adding the ski is no big deal. When it's retracted it hardly shows. You would have to scribe 2 parallel lines to the keel, file a small notch on the keel for the hinge and make a small piece for the retraction...