Final answer:
The Aviation Safety Officer is the principal advisor to the commanding officer on aviation safety matters, emphasizing the use of checklists to ensure safe operations.
Step-by-step explanation:
The principle advisor to the commanding officer on all aviation safety matters is typically known as the Aviation Safety Officer (ASO). The ASO is responsible for overseeing and enforcing safety policies, conducting safety training, and investigating any incidents or accidents. The use of checklists is one of the essential methods employed by the aviation industry to enhance safety. Checklists ensure that all crucial systems and equipment are reviewed and confirmed to be in proper working order before operations, such as takeoff for pilots and astronauts or surgical procedures in medical facilities.