What is the primary responsibility of the pilot conducting the exterior inspection?

The primary responsibility of the pilot conducting the exterior inspection is to ensure that gear pins are stowed securely. During an exterior inspection, the pilot is focused on verifying that all critical components are in the proper configuration and that safety protocols are being followed. The proper stowage of gear pins is essential because these pins are used to prevent movement of the landing gear when the aircraft is on the ground. Ensuring they are securely stowed prevents accidents and potential damage to the aircraft during taxi, takeoff, and landing phases. This task is a fundamental safety check that directly contributes to the aircraft's operational readiness.

The other responsibilities listed, such as setting up avionics, conducting engine starts, and monitoring communication frequencies, are important but typically take place after the exterior inspection is completed. The primary and immediate focus during the exterior check is on the physical condition of the aircraft and its safety features.