"Unless the sector does more to attract new men and women to the sector they could be facing problems within the next five to 10 years," Kathy Wolfe, ATTTO Chief Executive, said.
"It's testament to the sector that they have such a high percentage of experienced and long-standing staff, but it's time to face the reality that both technology and staff move on, and the sector has to act now to meet these challenges."
The figures show that there is a growing awareness of the issue.
Around 60 per cent of those surveyed reported that they are already feeling the effects of an ageing workforce on their workplaces, and half said they were being affected to a large degree.
Attracting new staff, retention and development were identified as the main challenges, particularly for pilots and aeronautical engineers.
Companies were also looking to increase staff in ground handling, support and training roles for air traffic control and engineering trades.
Irene King, CEO of the Aviation Industry Association, said the survey shows how critical it is to rush in "appropriately qualified people" into the industry.
"Sustaining present levels of contribution to our economy will become very challenging let alone meeting our nine per cent growth targets unless we increase training in key sub groups such as pilots, engineering and air traffic control," she said.