Originally Posted by
tdracer
The Saturn V has the rather unique claim that it never experienced a failure that prevented the payload from reaching earth orbit. No other US launch system with more than 10 launches can make that claim.
They lost a lot of F1 engines on the test stand (56 ???) due to issues including combustion instability at the injector plate. The RS25 engines have always achieved orbit, albeit by a very narrow margin at times.