What was found
ON TAXI OUT DURING FLIGHT CONTROL CHECK, FOUND LEFT SPOILER DID NOT EXTEND AND A GRINDING NOISE CAME FROM UNDER COCKPIT. AIRCRAFT RETURNED TO BLOCK. RESET SPOILER INDICATOR C/B, LUBRICATED CAPTAIN'S AND CO-PILOT'S CABLE DRUMS, PERFORMED FLIGHT CONTROL FUNCTIONAL CHECK. FOUND NO BINDING OR GRINDING NOISE, SYSTEM OPS CHECKED GOOD PER MM CH 27-00.