Gear Life
Thanks, Riff-Raff. A previous poster cited an " ultimate " life for the gears at 5000 hours. I assume he meant the fatigue life or Component Replacement Time (CRT ). Can one assume that the gears are exposed to accelerated load testing, multiple samples, a three sigma curve reduction etc? Assuming this or a similarly rigorous procedure to support the 5000 hour life is in place, there must be some hard work going on at AH to discover what resulted in two fatigue failures well within the CRT for the part. Unless I missed it, there hasn't been any information at all regarding the failure surface striation count, i.e., how long the crack existed prior to failure. There are a couple of posts on this thread that may/may not point toward a factor affecting the gear loads, but I'd guess that by now, the AH transmission people are way beyond that sort of speculation.