What was found
RECEIVED GEAR DISAGREE WARNING MESSAGE ON CLIMBOUT WITHIN 10 SECONDS OF GEAR UP SELECTION. RT MLG SHOWED RED. SELECTED GEAR DOWN. C/W QRH. 3 GREEN LANDING WEIGHT 46600 NORMAL LANDING. INSPECTED AND FOUND RT MLG UPLOCK TARGET ARM LOOSE, RESECURED RT MLG TARGET ARM IAW CMM 32-30-15 AND AMM 32-32-00 OPS AND LEAK CHECKS GOOD. C/W AWAC SUPP 08-067 PSEU FAULT CODE S18 DOWN ARROW, FAR (RII YES-I-182).