Travellers passing through Sydney Airport on Friday faced major disruptions after a staffing-related issue inside the air traffic control tower led to significant delays for both domestic and international services.
More than 100 departing flights were affected, with aircraft either held at gates or left waiting on the tarmac for extended periods. Some passengers reportedly remained onboard for nearly two hours before their flights were cleared for departure.
Airservices Australia later confirmed that the issue had been resolved and that normal airport capacity had been restored.
Air traffic restrictions imposed to manage flight demand
According to Airservices Australia, temporary air traffic flow management measures were introduced to safely regulate aircraft movements while operational restrictions were in place.
The government-owned air navigation service provider said the restrictions were necessary to balance the number of aircraft departing and those already in the air, ensuring that safety standards were maintained despite reduced staffing capacity.
The measures were lifted later in the day after staffing levels improved, allowing flight operations to gradually return to normal.
Airlines criticise disruption at Australia's busiest airport
The disruption drew sharp criticism from Australia's peak airline industry body, which questioned how staffing shortages could cripple operations at one of the country's busiest aviation hubs.
At least 110 flights were delayed as the morning disruptions cascaded throughout the day's schedule, affecting thousands of passengers travelling within Australia and overseas.
Although services resumed, airlines warned that delays earlier in the day continued to ripple through flight schedules well into the afternoon.
Sydney Airport website also experiences outage
The operational challenges were compounded when Sydney Airport's official website briefly became inaccessible shortly after 2 pm local time.
Visitors attempting to access the site were met with an error message stating that the page could not be loaded because of unusually high traffic or a possible configuration problem. The website was later restored.
Airservices Australia defends controllers, highlights safety
Responding to criticism, Airservices Australia acknowledged that the temporary traffic management measures had disrupted airline schedules but stressed that the decisions were made solely to maintain safe operations.
The organisation said no further significant delays were expected after capacity returned to normal.
It also defended its air traffic controllers, describing them as highly trained professionals performing a demanding, safety-critical role. The agency emphasised that it takes the wellbeing and psychosocial safety of controllers seriously and urged public commentary to recognise the professionalism of staff responsible for keeping Australia's skies safe.
Why the disruption matters
The incident once again highlights how staffing pressures in air traffic control can quickly affect airport operations, particularly at major hubs such as Sydney Airport. Even temporary shortages can trigger widespread delays that ripple across domestic and international networks, disrupting airline schedules and passenger travel plans long after the initial issue has been resolved.
