What was found
#2 ENG OIL PRESSURE CAUTION DISPLAYED WHILE ON GROUND AT FLY (1.3 FOR APPROXIMATELY 10 SECS). DURING T/F MOC, #2 ENGINE OIL PRESSURE NEVER WENT ABOVE 1.4 BAR WHILE IN THE FLIGHT POSITION AND WITH INCREASED COLLECTIVE INPUT. WHEN ENGINE WAS REDUCED TO IDLE, PRESSURE DECREASED TO 1.0 BAR AND REMAINED WITH ASSOCIATED #2 ENG OIL P CAUTION DISPLAYED ON CAD. REPLACED VALVE ASSY IAW ARRIEL 1 E2 MM 72-61-40-900-801-B01.