Not as familiar with the 53E s you might think, LW-the 53E started test flights in early 74 and the UTTAS ( UH-60 ) kicked off in the Fall of that year and absorbed all of my time. I just attempted to phone the retired 53E Project Test Pilot unsuccessfully but in my recollection, the E didn’t have blade de-ice to start with and I cannot recollect a subsequent blade de-ice redesign/flight test qualification afterwards. Haven’t heard anything about blade de-ice testing on the 53K either, but I’ll cross-check on that.. They both have engine and inlet anti-ice systems of course.
Condolences and prayers for the families of the HMH-361 crew.
Last edited by JohnDixson; 8th Feb 2024 at 13:28.