I was employed by BEA then BA in the 60's and 70's and to be honest a large number of the Captains were among the most arrogant and ill-mannered aircrew I have ever worked with.Many of them seemed to think they they were still in the Airforce and that we in maintenance were some kind of serfs.On one occasion I had had enough of being screamed at and spoke to my shop steward who advised me to tell the gentleman that neither he nor his aircraft would be leaving GLA until an apology was forthcoming - it was, with the excuse that his flight manager was giving him a hard time regarding his fuel burn.I left BA in 1977 and went out into the real world where I learned how to work in the real world.