What do the limitations under Subpart B typically identify?

Subpart B limitations are primarily concerned with identifying unusual operational characteristics associated with airport operations. This framework is designed to enhance safety and operational efficiency by categorizing and recognizing specific practices or conditions that may deviate from standard operational norms. Understanding these characteristics is crucial for airport managers and operators to ensure compliance with regulations and to maintain safety standards.

While the other options touch on relevant aviation topics, they do not align with the specific focus of Subpart B. Aircraft theft incidents are specific security concerns, funding requirements for airports relate to financing rather than operational procedures, and international flight schedules pertain to flight operations but do not directly address the unique operational characteristics that the limitations under Subpart B aim to identify.