A Pakistani helicopter came within 300 metres of the Line of Control in the Pakistan-administered Kashmir territory near Poonch sector in Jammu and Kashmir, official sources said.
There was no firing or hostile action by any side, they said.
According to laid down norms by both the sides, rotary wing aircraft should not come within one kilometre of the LoC and fixed wing aircraft should not be within 10 km of it.
The helicopter later went back, the sources said.