How often should propellers be inspected on the Beechcraft Travel Air BE-95?

The correct choice indicates that propellers on the Beechcraft Travel Air BE-95 should be inspected at every annual or 100-hour maintenance check. This inspection schedule aligns with standard aviation maintenance practices, which prioritize thorough and systematic inspections at regular intervals as part of an aircraft's maintenance program.

Annual maintenance checks are designed to be comprehensive evaluations of the aircraft's systems, including the propellers, to ensure their condition and functionality meet safety standards. The inspection frequency of every 100 flight hours provides a good balance between safety and operational efficiency, allowing for identification of any wear or damage that could occur from regular use.

The other options suggest either too frequent inspections or intervals that might not adequately address potential issues before they affect safety or performance. Therefore, the adherence to the 100-hour or annual maintenance schedule ensures that the propellers are properly monitored and maintained, which is critical for the airworthiness of the Beechcraft Travel Air BE-95.