What was found
DURING AN ANNUAL INSP, A HAIRLINE CRACK WAS DISCOVERED ON THE BLOCK OF THE LANDING GEAR CONTROL VALVE, PN 9910225-1. THE CRACK WAS ALLOWING HYD FLUID TO LEAK OUT, THE LEAK WAS SMALL. THE PART HAD 16.1 HRS SINCE O/H. THE VALVE WAS SENT BACK TO O/H, WHERE THE BLOCK WAS REPLACED UNDER WARRANTY, NO EXPLANATION WAS GIVEN FOR THE CRACK, THE WARRANTIED PART WAS INSTALLED AND WORKED AS DESIGNED.