What was found
PILOT REPORTED THAT THE LANDING GEAR WOULD NOT COME UP. THE GEAR INTRANSIT LIGHTS REMAINED ILLUMINATED, NONE OF THE 3 GREEN LIGHTS WOULD ILLUMINATE AFTER THE GEAR HANDLE WAS DOWN, MANUALLY EXTENDED GEAR TO GET 3 GREENS, TRANSIT LIGHTS EXT. MAINTENANCE FOUND A LEAK IN THE RETRACT HOSE, R&R HOSE PN 101-388-016-7 IAW AIM 10 MI 32.01, OPS AND LEAK CHECKED GOOD.