Bosses at the Midlands Air Ambulance have vowed rescue services will continue - despite being limited to land ambulances.
Speaking after the charity was forced to suspend its air rescue service following a fault with a similar model, chief executive Hanna Sebright said:
The safety of public, our aircrews and patient care will always remain our priority. I can confirm our aviation partner, Bond Air Services, has temporarily suspended our three helicopters.
This is purely a precautionary measure as a result of a defect found by Bond which requires further investigation.
We expect the suspension to be short term and temporary while checks to our three aircraft are completed.
While the investigations are being carried out, our aircrews will continue to provide patient care via our rapid response vehicles, which are located at our RAF Cosford, Strensham and Tatenhill airbases.
We are working closely with Bond Air Services during this time and will inform the public when our helicopter emergency medical service is back online.
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