What was found
AFTER TAKEOFF NOTICED LEFT GEAR UNSAFE LIGHT ILLUMINATED, HANDLE IN THE UP POSITION, AFTER A FEW MINUTES THE LEFT GREEN GEAR LIGHT ILLUMINATED WITH THE HANDLE STILL UP, WITH THE RED UNSAFE LIGHT AS WELL. FOLLOWED QRH, GOT THREE GREEN AND NO RED UPON EXTENSION, LANDED AND TAXI IN NORMAL. GROUNDED - YES. AIR TURNBACK - PERFORMED PSEU BITE PROCEDURE FOUND FAULT 29-20001, 29-20002, 29-24001. T/S PER FIM 29-20/805 FIM 29-20/806, 807, 808, ALL FIMS INDICATED A FAULTY PSEU. REMOVED AND REPLACED PSEU REF AMM 32-09-10, OPS TEST, BITE TEST, SELF TEST, LGTV TEST ALL PASS REF FIM 32-09/801, NO EXISTING FAULT FOUND. PERFORMED MAIN LANDING GEAR OPERATIONAL TEST PER AMM 32-32-00-710-801, TEST PASS . BLEED HYDRAULIC SYSTEM PER AMM 29-00-00-870-801, OK FOR SERVICE.