Air Corp crews are on standby to deal with any wildfires in the Wicklow Mountains, and have been provisionally asked to assist Wicklow County Fire Service.
There are still a number of wildfires burning in remote locations in the mountains, the fire service has said.
A request was put in to the Defence Forces this morning for assistance to tackle fires in difficult to access areas.
Minister for State with responsibility for Defence Paul Kehoe announced this morning that an AW 139 helicopter would be deployed to help deal with the blazes.
I wish to confirm that a request has been approved for @IrishAirCorps support along the Wicklow / Dublin border , where a number of wildfires have broken out. AW 139 will be deployed to assist the Wicklow County Fire services .Request received this morning by DOD. @defenceforces— Paul Kehoe T.D (@campaign4kehoe) February 27, 2019
The helicopter was deployed before midday and continued to assist crews tackling wildfires in the Wicklow Mountains throughout the day.
The AW 139 is equipped with a Bambi Bucket which allows it drop up to 1,225 litres of water in a single pass.
The Air Corps said that 42,000 litres of water was dropped - the equivalent of nearly 85,000 bottles of water.
It is the first time the Air Corps has responded to such a request in February. It says this time last year crews were on standby to respond to Storm Emma.
The Air Corps has asked for members of the public not to inhibit the operation, particularly with the use of drones.
Many thanks to @OC3OPS for sending two helicopters to #Wicklow today. In an act of neighbourly selflessness we agreed to them fighting fires in Dublin with water from Wicklow. @DubFireBrigade pic.twitter.com/FLUmhuYCZL— Wicklow Fire Service (@FireWicklow) February 27, 2019
The worst wildfire was identified at around 11.30am over the border in Co Dublin above Cruagh Wood and Tibradden Wood.
A second helicopter was provided and the Air Corps fought the fire until 4pm. Having completed this task and re-fuelled it proceeded to fight fires on Kippure.
Meanwhile a fire crew from Rathdrum dealt with a wildfire in the Laragh area around 12.45pm, while a crew from Dunlavin tackled a gorse fire at Granabeg Lower this afternoon.
Wicklow County Council says there are still a number of fires burning, in particular above the Defence Forces' Camp in Kilbride.
It says these fires are being monitored by the Parks and Wildlife Service, Coillte and Wicklow County Fire Service.
Crews from fire stations across counties Wicklow, Dublin and Kildare have been dealing with wildfires across the mountain range from the Dublin border to Hollywood since Monday.
Darren O'Connor, sub-officer with the Dublin Fire Brigade, said some of the recent gorse fires are controlled, legal ones carried out by farmers.
He told RTÉ's Morning Ireland that it was possible that embers from controlled fires have been carried to other areas by wind.