A Bristow Norway Sikorsky S-92A had climbed to between 3,000 and 4,000 ft after departure from a North Sea drilling platform when occupants heard a loud bang and instruments indicated that the left engine had stopped.
Accident/Incident Investigation, Helicopter Safety, In-depth Feature
Broken Bolts
Investigators found no certain clues as to why 12 T-bolts in an S-92’s engine fractured during a North Sea flight.
