They are required by law to pay a dividend. Airservices Act 1995. If they don't make a profit there is no dividend & Minister gets cross!
46 Payments of dividends by AA to the Commonwealth
(1) Within 4 months after the end of each financial year, the Board must recommend to the Minister in writing that AA:
(a) pay a dividend of a specified amount to the Commonwealth, in relation to AA’s operations in the financial year; or
(b) not pay any dividend to the Commonwealth for the financial year.