Replacement of radar systems at the airport is vital to ensure growth in air traffic to the Isle of Man, according to the Airport director Anne Reynolds.
Later this month Tywnald will be asked to approve spending almost £3.5 million to replace its two radar systems.
It's another costly upgrade for Ronaldsway, after the runway and control tower projects.
Ms Reynolds says replacement of the primary radar has been budgeted for, while licensing approval for the secondary system, providing data on incoming aircraft, is due to expire soon.
She says both require investment:
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