What counts as 'advertisement'?
A few people at work who are aware I fly by word-of-mouth have asked me to take them up for pleasure flights and as it's a fairly large place I was going to put an article in the weekly newsletter, including the following statement:
"If anyone fancies a flight just let me know, fixed costs are covered so a contribution towards fuel will be fine."
Is this outside the rules or if it's within work premises is it ok to advertise in such circumstances (as long as you're paying proportionate costs)? As it's a fairly large place I'd hate some jobsworth to shop me to the CAA when I wasn't aware I was doing anything wrong!!