Warning signs missed in North Sea helicopter crash landing
An AAIB report - that found the S92 had a bearing failure in the tail rotor that wasn't picked up by engineering checks.
A helicopter that span out of control when landing on a North Sea platform in 2016 showed warning signs of a technical issue were missed.
That's according to an AAIB report - that found the Sikorsky S92 had a bearing failure in the tail rotor that wasn't picked up by engineering checks.
Noone was hurt in the incident on the West Franklin Platform in December that year - but it led to the grounding of all S92s for safety checks.
Operator CHC says its made changes to improve detection of faults since.