What was found
DURING DESCENT AT FL290, A RT GEAR RED LIGHT ILLUMINATED. QRH RED GEAR LIGHT WITH GEAR HANDLE UP P.32.9 COMPLIED WITH UP TO STEP 4. HAD 3 GREEN LIGHTS ON MAINS & NOSE GEAR WITH A GEAR DOOR OPEN LIGHT ANNUNCIATION. WENT TO QRH P .32.5 GEAR DOOR OPEN, NORMAL HYD PRESS, PROCEEDED TO GEAR DOOR OPEN LANDING P.32.5. INSPECTED GEAR DOORS & VERIFIED THEY WERE DOWN. SOMETHING FLEW OFF GEAR BYPASS LEVER ON RT MAIN GEAR ACCORDING TO MX TECH INSPECTION. RT MLG DOOR UP LATCH ROLLER PREPLACED IAW AMM 32-31-04. NO FURTHER DEFECTS NOTED.