What was found
UNSAFE GEAR INDICATION ILLUMINATED DURING DESCENT FOR THE RIGHT MAIN GEAR, UNSAFE INDICATION ON BOTH THE GEAR PANEL AND SYNOPTIC. COMPLIED WITH QRH, INDICATION WENT AWAY AFTER SLOWING BELOW 230KTS. NORMAL EXTENSION DURING APPROACH AND LANDING . PSEU TEST PASSED, PSEU FAULT HISTORY DISPLAYED A SENSOR FAULT FOR RIGHT GEAR UP AND LATCHED A & B SENSOR DISSAGREE. INSTALLED MISSING SPRINGS IAW AMM 32-60-7560, CYCLED MAIN LANDING GEAR, VERIFIED ALL GEAR INDICATIONS TO BE NORMAL IAW AMM 32-61-02. ALL SENSORS AND TARGETS READ WITHIN LIMITS IAW AMM 32-61-15-5, ACFT OK FOR SERVICE.