Richard W. wrote:
Is it usual for the NTSB report on the Hudson River ditching to take so long? Been over a year now.
Before someone jumps down my throat

, I have never been involved in an accident investigation and my question is sincere, not a criticism.
Excellent question. I had to work a single-seat fatality last year, and the NTSB finished their report in roughly three months. However--it was largely handled by the local FSDO, with information CC'd to them. There were also a number of witnesses, so it was fairly open and shut. I would imagine that contributed to the speed of the report.
I'm drawing a blank at the moment, but I think the P-47 incident in question stemmed from an in-flight engine failure. Because of that, the investigation would take more time to find the root cause of the failure and determine if any service bulletins or ADs were recommended.
Just my $0.02.
-Brandon