Dozy, I may very well be in error but I have reasons to believe flarepilot may very well be a reincarnation of our friend SSG, lately going by the Teldorserious handle. Flarepilot made the claim earlier in this thread that the Sabreliner 40 had a placard in the cockpit advising limiting control movement to 50% when above 40,000 feet. Only trouble is the operators of the aircraft I've talked to have never heard of it, and nor the FAA.