Originally Posted by
SASless
AH has some “splaining” to do about the success rate of second stage components making it to Design Life.
The tables around page 25 of the report go into some detail and as you would expect the situation is somewhat more nuanced. After REDL for example Heli One adopted a policy of replacing on first overhaul. They also most usually fitted the NTN-SNR variant which proved more resilient. Nevertheless, only 10% of both types combined made it to operational life.
What would be interesting is if any of our helicopter maintenance colleagues could take a look at the tables and tell us if the level of damage from in service operations is very different from other types?.