A pilot has died after two light planes collided in midair over Sydney’s south-west.

Emergency services responded to reports of a plane crash near a privately owned Wedderburn Airport, also known as Napper Field, about 12.15pm on Sunday.

The two Vans RV-7 aircraft were reportedly involved in a formation flight of four planes that were returning to land at the airport when the collision occurred.

Emergency services found the body of the pilot, believed to be the sole occupant of the aircraft.

NSW Police confirmed on Monday he was a 64-year-old man.

Investigators from the Australian Transport Safety Bureau will collect evidence from the accident site as they investigate the cause of the crash.

“One of the aircraft involved in the collision landed safety but the other aircraft collided with terrain and its pilot was fatally injured,” the bureau said on Sunday.

The investigation will include site mapping, examining the wrecked and damaged aircraft, and recovering any relevant components for further examination.

The ATSB will also interview the other pilots involved in the formation flight, as well as other witnesses and involved parties.

Air traffic control and flight tracking data, pilot and aircraft maintenance records and weather information will also be assessed.

A preliminary report will be released by February.

On Boxing Day 2022, two occupants of a foreign-registered light plane were killed shortly after taking off from the same airport.

The amateur-built Glasair aircraft crashed in bushland, sparking a large scrub fire and claiming the lives of pilot Leigh Cunneen, 67, and his passenger Steve Donoghue.

-AAP