fly beneath (the/someone's) radar(redirected from flown beneath their radar)
fly beneath (the/someone's) radar
To go without being noticed, detected, or addressed. A: "Have you heard this band's latest album?" B: "I didn't even know it was out, it must have flown beneath my radar." Every year, the government promises to do something about the homelessness problem, yet every year it seems to fly beneath the radar.
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