Sydney: A Qantas flight from Auckland requested a "priority landing" at Sydney airport on Wednesday after experiencing a fuel system problem.
The Boeing 737 landed safely and passengers disembarked without incident.
"The flight crew on board QF50 from Auckland to Sydney requested a priority landing at Sydney airport as a result of a fuel system fault," a Qantas spokesman told the AAP newswire.
He added that a fuel transfer valve would be replaced on the aircraft.
It was the latest in a series of recent incidents involving Australia`s national airline.
Last month, a Perth-bound plane returned to Adelaide after smoke entered the cabin from a malfunctioning oven.
This came just days after a cockpit fire caused by an electrical fault forced a Qantas Airbus A330-200 bound for Manila from Sydney to make an unscheduled landing in Cairns.
Last November, the airline temporarily suspended flights of its Airbus A380 superjumbos after an engine on one exploded after taking off from Singapore, damaging the plane.
Then in January this year, a flight bound for New York made an unscheduled stop in Fiji after the Boeing 747 developed a problem with a fuel valve supplying one of its engines.
Soon after, another Boeing 747 suffered mid-air mechanical trouble after taking off from Bangkok and was forced to return to the Thai capital.