Salaries amount to just under one third of all income.
That's it then,no more from me,I've got my own responsibilities and they do not include paying hard earned cash for salaries for work that could mostly be done by volunteers
Lister.
The CAA require the engineers to be proper qualified, certified and licensed, Volunteers can't work on the aeroplane, they can and do help out in a supporting role but the chaps wielding the spanners have to be professions.