Francis Tapon and myself, discussing D. B. Cooper and Flight 305 on the WanderLearn channel: .
Despite the provocative headline on YouTube, I do not fault the FBI's handling of the case of Flight 305. Some aspects, for example the concept of the "sled test" flight, were brilliant.
I think that the FBI relied on outside experts who did not provide a full picture of the uncertainties in the data, especially with regard to the flight timing, wind speeds and directions, and the distinction between the "oscillations" and the "pressure bump".