A GLOBAL safety review launched after faulty fuel gauges were discovered on the same type of helicopter involved in the Clutha crash has detected problems with 99 sensors.

Checks were carried out on 753 Eurocopter EC135 helicopters worldwide after an air ambulance in England was found to have a defective fuel indicator which was overestimating the amount of fuel on-board.

A spokesman for Airbus Helicopters, the new name for Eurocopter, said the review had found faults in 99 out of 1506 fuel sensors. However, in 62 of the 99 the overestimate equated to less than one minute of flight time, and only five were beyond repair.

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The results come after the latest AAIB update on the Clutha disaster, in which 10 people died when a helicopter crashed into a pub in Glasgow in November found the aircraft experienced'low fuel' warnings shortly before the crash.