An extra push is needed to raise the money to erect a full-sized replica of a Supermarine Spitfire on a plinth at Langham Dome in north Norfolk.
It will sit alongside the dome and visitor centre at the now disused airfield at RAF Langham, near Wells.
About £20,000 of the £35,000 needed for the Langham Dome Spitfire Memorial Appeal was raised through various grants and functions.
A US Spitfire owner has agreed to match any money raised by the Friends of Langham Dome whose crowdfunding page has already raised £5,490.
Friends' chairman Patrick Allen said: 'We will dedicate the memorial to a pilot, Richard Younghusband, who was the last fatality at Langham in July 1953.'
The dome is one of the last remaining structures built during the Second World War to house the Dome Trainer, a war-winning invention used for anti-aircraft gunnery training.
If you can help with the appeal, visit www.crowdfunder.co.uk/langham-dome-spitfire-memorial
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