I understand to keep an aircraft airworthy, one of the items that must be followed is a walk-around each day. I've been browsing through the CARs for a couple hours now and I couldn't find anything on walk-arounds or pre-flight inspections in either the CARs or the AIM. Any help?
14 CFR §91.7 Civil aircraft airworthiness.
(a) No person may operate a civil aircraft unless it is in an airworthy condition.
(b) The pilot in command of a civil aircraft is responsible for determining whether that aircraft is in condition for safe flight. The pilot in command shall discontinue the flight when unairworthy mechanical, electrical, or structural conditions occur.
How are you going to determine if an aircraft is in a condition for safe flight without doing a pre-flight inspection?