Sydney Airport Demand Management Act 1997

The Slot Manager (a private company appointed by the Minister) runs the Slot Management Scheme — the rulebook for allocating and managing these slots.

Airlines can be fined (civil penalties — financial penalties imposed by a court) for:

• Not using a slot they were given (60 penalty units — currently around $19,800 per offence)
• Flying without a slot at all
• Taking off or landing more than 15 minutes outside their allocated time (or 30 minutes for long-haul flights of 3+ hours)
• Not following other slot conditions
• Applying for slots with no real intention to use them ("slot hoarding")
• Failing to return or transfer unused slots within 14 days of deciding not to use them

Exemptions exist for:

• Genuine emergencies (search and rescue, medical emergencies, natural disasters, in-flight emergencies)
• Military and government aircraft ("state aircraft")
• Situations the Slot Manager officially exempts

Recovery Periods — When Things Go Wrong

If operations at Sydney Airport are significantly disrupted (e.g., severe weather, major incidents), the Minister can declare a "recovery period" of up to 2 hours on the same day. During this window, the hourly limit rises to 85 movements, helping the airport catch up on delayed flights.

Who Oversees All This?

• Airservices Australia (the government body managing air traffic control) monitors whether the flight limits are being respected — but it can't actually enforce the limits, just watch and report
• The Slot Manager (a private company) allocates and manages slots day-to-day
• The Compliance Committee — an independent body with representatives from the airport operator, the Slot Manager, Airservices Australia, and independent members appointed by the Minister — investigates and reports on slot usage and compliance
• The Minister retains strong override powers: they can direct the Slot Manager to vary, suspend or cancel slots, and can set lower flight limits

Information and Privacy

The law includes a detailed regime for handling commercially sensitive airline data and personal information. People working with this information (government staff, Slot Manager employees, Compliance Committee members) can face civil penalties for misusing it.

Who Does This Affect?

• Travellers flying through Sydney Airport — indirectly, through flight availability and scheduling
• Airlines operating at Sydney Airport — directly, through slot allocation rules and penalties for misuse
• Sydney Airport itself (the operator company) — compliance obligations and representation on the Compliance Committee
• Airservices Australia — monitoring obligations
• The Slot Manager company — day-to-day administration

Bottom Line

This law exists to stop Sydney Airport from becoming overwhelmed with flights, protect nearby residents from excessive noise, and ensure fair access to one of Australia's most congested aviation hubs. Airlines can't just turn up whenever they want — they need a slot, they need to use it on time, and they can be fined if they game the system.