What was found
RT LANDING GEAR RED LIGHT ILLUMINATED AT FL330. DESCENDED TO FL270 & SLOWED TO 230 KTS IAW QRH. LIGHT REMAINED ON UNTIL PASSING FL20.5, GOOD INDICATIONS ON LANDING LIGHTS, 3 GREEN. FAULTED 317074 INTERMITTENT RT GEAR UP & LATCHED, AB SENSOR DISAGREE, FOUND RT MAIN GEAR UPLOCK SENSOR TARGET OUT OF ADJUSTMENT. ADJUSTED WITHIN LIMITS USING MM 32-61-15-4. PSEU RTS CHECKED GOOD.