As a current dispatcher and ex engineer, all the crew, ground staff, toilet cleaners, caterers and engineers in my company get called by their first name AFTER they have introduced themselves (common decency / good manners...), otherwise by job title.
When I am working for a third party airline I ALWAYS address the captain as Captain and the engineers as Eng. I am not always sure of the etiquette in foreign operators companies / countries so feel that is the only polite way to do business. I get called Dispatch. Simple
PS who do engineers think they are? Well, it took me three yrs to do my apprenticeship and it only takes pilots 18 mths to train, so really you better show me some respect kiddo...
