Final answer:
The pilot in command is responsible for determining if an aircraft is safe to fly by performing a pre-flight checklist. The FAA enforces regulations like operational limits to aid in maintaining flight safety.
Step-by-step explanation:
The individual responsible for determining whether the aircraft to be flown is in condition for safe flight is the pilot in command. Before every takeoff, pilots are required to go through a detailed checklist that covers various parts of the aircraft to monitor and ensure that all essential equipment is functioning properly. This pre-flight inspection is a critical safety protocol in the aviation industry meant to reduce the risk of accidents. Additionally, regulatory bodies such as the Federal Aviation Administration (FAA) set operational limits for pilots to prevent fatigue, further contributing to flight safety.