The East Anglian Air Ambulance has been temporarily grounded over safety concerns.
The helicopter is the same model as the craft which crashed into a Glasgow pub earlier this month.
It's one of twenty-two Eurocopters taken out of service by operator Bond, who are investigating problems discovered with a similar helicopter.
Bond Air Services says it has temporarily grounded 38 EC135-model helicopters globally after discovering a "defect" in one of them.
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Some morning brightness on Boxing Day but cloud increasing, with rain, sleet and snow, spreading in late afternoon. Turning windy.
Starting cold and dry Boxing Day. Wet and windy later.
The Met Office has issued a yellow weather warning for the risk of rain turning to snow later on Boxing Day in parts of the Anglia region