What was found
***SUPPLEMENTAL INFORMATION *****L REV UNLOCKED CAUTION MESSAGE ON DEPARTURE. IACS AND QRH C/W. YELLOW REV ICON. L REVRESER APPEARS PHYSICALLY STOWED. ***AIRCRAFT REMOVED FROM SERVICE ***** LFT TR DEACTIVATED PER AWAC SUP 15-046D. THE TR WAS FOUND TO BE IN THE STOWED POSITION, NO PDU ADJUSTMENT NECESSARY. REF 339091/3 FOR MEL VODZAK, NICHOLAS A&P 3563655 TROUBLESHOOT LEFT TR PER AWA SUPP 13-037A. NO DEFECTS FOUND AT THIS TIME. LUBRICATED LEFT TR SLIDER BLOCKS, TRACKS, AND BALLSCREW ACTUATORS PER AWA SUPP 14-118A AND AWA SUPP 12-128.