Lets not start unsubstantiated rumours!!
The aircraft in question, was flown to EXT following clearance, where it underwent full x-ray inspection and investigation.
The aircraft was out of service for approximately 3 days and was only authorised back into service once exhaustive checks had been carried out. The volume of mercury was very small, however all was done to ensure the safe operation of the aircraft prior to it's return to service.
The airframe is fully serviceable and has been fully intergrated back into Flybe's fleet since it's inspection.