In 2016, a 43-year-old contractor fell 66 metres during a storm while working at a remote area Telstra tower.

The man sustained multiple injuries as he fell from the height.

While emergency services were called immediately, the CareFlight Top End Rescue helicopter was undergoing scheduled maintenance and was unavailable for tasking.

He died of his injuries at the base of the tower as he waited for medical assistance.

Last week, leaders of the national aeromedical charity were in Canberra to raise awareness of the need for a second rescue helicopter, bringing the service up to par with other states.

"We've been working with the NT Government for the past eight years operating the only aeromedical rescue helicopter out of Darwin," CareFlight's chief executive officer Mick Frewen said.

"So we've seen first-hand the inequality that exists for people living in the Top End."

Mr Frewen said the majority of CareFlight's call outs are to Indigenous or isolated communities.

"So we feel it prudent we work towards closing the gap for First Australians and improving healthcare equity for all Australians working in remote locations," he said.

The Northern Territory operates just one medical rescue helicopter to service the wide, expansive Top End region.

When this helicopter is undergoing maintenance there is no medical rescue helicopter response available.

All other states of Australia have at least three medical rescue helicopters; a second medical rescue helicopter would increase CareFlight's service capability from 70 per cent service to more than 95 per cent.

CareFlight's chairman Andrew Refshauge, Mick Frewen and general manager of northern operations Philip Roberts, attended a forum called "Facing North" forum at Parliament House.

It was a chance to lobby the government to continue to highlight the inequality in access to healthcare for Territorians, particularly those living in rural and remote communities.

Mr Frewen said the forum was a great opportunity to meet with federal ministers and key business leaders to raise awareness..

"And in doing so, start conversations at a federal level to fund a second helicopter."

Part-funded by the Top End Medical Retrieval Service, CareFlight operates on behalf of the NT Government.

But Mr Frewen said it is the generous support of the Top End community that underpins the remainder of the funding, along with medical rescue support for other activities in the Territory.

"The Northern Territory is grossly under resourced, with only a single helicopter to cover the great distances that exist in the NT," he said.

He said when the one helicopter is offline for maintenance, there is simply no other option.

"When this helicopter is undergoing maintenance there is no medical rescue helicopter response available.

"A second medical rescue helicopter will close the gap on medical rescue capability, from 70 per cent service availability to more than 95 per cent availability.

"All other states of Australia have at least three medical rescue helicopters, so we are committed to seeking funding for a second helicopter.

"CareFlight is working with a variety of organisations and stakeholders across the resources, agricultural, tourism and defence sectors to generate support for a second medical rescue helicopter and we're hoping to keep the momentum up so we can secure funding sooner rather than later."

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