Weststar AW139 Hyd failure and RH MLG Collapse
On 23rd December, one of Weststar's AW139 suffered in flight #2 HYD system failure while on an offshore flight. Durng the RTB Landing, the RH MLG Collapsed.
Initial findings show the No.2 Hydraulic System PCM fluid level was non-existent and the upper deck area around the No.2 PCM wet with hydraulic fluid. The leak appeared to come from an apparent failure on the PCM end of the No. 2 hydraulic hose assembly (PN A494AE3E00E0930X per IETP IPD Ref. 39-A-29-12-00-040-941A-A, item 2) connecting the No. 2 Hydraulic Pump to the No. 2 PCM.
Investigation into why the MLG collapsed is ongoing.