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Conservative MP Richard Drax led an adjournment debate on Portland's search and rescue service on 19 December 2012.
The Portland search and rescue helicopter base on the south-west coast is scheduled to close in 2018 under government plans to streamline the UK's coastguard service.
Mr Drax has opened an e-petition to retain the helicopter that currently has around 13,000 signatures.
He claims replacing it with a regional service "breaks the integrity" of the cover for that area of Dorset.
The Department for Transport has previously said a more modern, faster fleet of helicopters operating from fewer bases will provide a more reliable service that still meets key requirements.