-438. It's 40-50/ year for the next 15. Not sure of 'average age' though. I suspect that it won't be 'quick' promotion for new hires but if they get in young (say under 25) then they'll be senior at the end off heir career for quite some time given the 7-8 year gap since last recruiting.
Tuner2, correct. Not a new contract. 787 conditions are part of EA. Colloquial use of the term 'contract' I suspect is what is causing some confusion.
Directanywhere is correct. We are a SARS, Ebola or Russia invading Ukraine type crisis away from everything changing again. If none of those occur though I reckon we are looking at all 50 options delivered over a 4-5 year period. About 15-20 of those for expansion.
After having seen this range figures for the various types on the previous page my guess is also 777X as a 744 replacement from 2020ish and then a 777X MAX to replace the A380s from mid 2020s.