(14 Dec 2021, 3:20 pm)JP6004 wrote Thought they were already done. Doubt they would be as B9s on 309 didnt when they were fitted...did they?
They were sent away to get done whereas the B5Hs were done in house (I believe anyway).
That's the only reason I can think of that they aren't already out in service when the rest of the batch are, I think it's the only thing that was done differently