What was found
(CAN) PILOTS REPORTED LT HORIZONTAL STAB. DE-ICER BOOT APPEARS LOOSE. MAINTENANCE INSPECTED THE DE-ICER BOOT AND FOUND THE BOOT HAD COME LOOSE FROM THE AIRCRAFT AT THE AFT EDGES. THE ADHESIVE (3M 1300L) DID NOT SECURE THE DE-ICER BOOT TO THE STAB. THE BOOT WAS RECENTLY REPLACED BY AC SERVICES, UNDER WO 15249. TIME ON PART WAS 54.6 HOURS AND 73 LANDINGS THE DE-ICER BOOT WAS REPLACED AND THE AIRCRAFT RETURNED TO SERVICE. (TC 20070725004)