Dear John Farley -
xxx
Please advise Boeing, the Argentina CAA and my airline (AR) that I indeed teach incorrect facts, and that all the manuals I use, or issued to me contain same erroneous information...
xxx
I will post a copy of your note on the pilot's bulletin board, among other jokes...
Incidentally, I recommend you also read "Handling the big jets" by the late D.P. Davies, ARB Editions, London.
End of subject.
xxx
Happy contrails