What was found
GEAR RETRACTION UNSAFE INDICATION ON RT MAIN GEAR, BOTH PRIMARY AND SECONDARY INDICATIONS SHOWED UNSAFE. COMPLIED WITH QRH -CYCLED GEAR STILL UNSAFE INDICATION ON RETRACTION. RETURNED TO DEPARTURE, DECLARED EMERGENCY, LANDING UNEVENTFUL. NO CURRENT FAULTS. PSEU RTS PASSED AND ALL SENSOR READOUT VALUES WITH IN TOLERANCE. MLG UP & DOOR LATCH SENSOR, BRACKET & WIRING APPEAR NORMAL. R & R SENSOR D1-80 UPLOCK SENSOR AND PSEU IAW AMM. OPS CHECKED NORMAL.