Which conditions would restrict an SIC from taking off or landing with passengers?

The correct answer centers around the specific operational limitations regarding takeoff and landing with a Second-in-Command (SIC). Gust factors greater than 10 knots can present a significant challenge for an SIC during critical phases of flight such as takeoff and landing. These conditions may lead to increased difficulty in maintaining control of the aircraft, particularly if the SIC lacks sufficient experience or if the aircraft's handling characteristics are sensitive to wind gusts.

For flights conducted under Part 135 operations, the regulations encourage strict adherence to safety protocols. Gust factors exceeding this threshold might be part of a Standard Operating Procedure (SOP) that restricts such operations to ensure that the SIC has an adequate safety margin and experience level to handle adverse weather conditions. Having greater wind gusts could lead to difficult approach conditions, unpredictable aircraft behavior, and increased workload, which are particularly critical when passengers are on board.

The other conditions presented in the question are generally not restrictive. Daytime operations tend to be safer and more manageable, and visibility greater than 3 statute miles typically allows for safe flight and landing under visual flight rules (VFR). Additionally, a flight duration of under 30 minutes does not inherently impose restrictions on takeoff and landing with passengers, as operational decisions would rely more