The Republic of Korea Navy (RoKN) has resumed operations on seven of its eight AW159 naval helicopters.
The entire fleet of anti-submarine warfare (ASW)-capable aircraft was grounded in November 2019 as a precautionary measure after abnormal vibrations were detected in one of the helicopters during a routine patrol operation, said a RoKN representative in an email reply to Jane’s on 11 January.
These vibrations have since been narrowed down to a faulty rotor vibration damper on the affected aircraft. The remaining seven helicopters were not affected by the fault, and were cleared to resume normal operations progressively since 3 January, the service added.
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