What is the minimum width requirement for a runway used by Part 135 operators for VFR day flight?

The correct answer states that the runway must be twice the outer main gear span for a runway used by Part 135 operators for VFR (Visual Flight Rules) day flight. This requirement is rooted in ensuring that the runway provides adequate space for the safe operation of aircraft, particularly during takeoff and landing phases.

Having a runway width that is double the outer main gear span enhances safety by allowing for a greater margin of error. This extra space is crucial for preventing runway excursions, especially in adverse weather conditions or during crosswind landings when there may be a risk of the aircraft veering off the runway centerline.

This minimum width requirement reflects the operational considerations of Part 135 operators, who often employ larger aircraft compared to general aviation and require stricter safety standards. It also emphasizes the importance of runway dimensions in relation to aircraft design specifications.

The other choices do not meet the minimum safety and operational standards as outlined for Part 135 operations. For instance, having the runway equal to the outer main gear span may not provide sufficient room for safe operations, while specifying a width of at least 30 meters doesn't adequately account for the various aircraft sizes that may use the runway. Similarly, a requirement of four times the wingspan could lead to impractical