Which of the following is NOT a general consideration for 135 flight planning?

The correct choice highlights that fuel requirements for the aircraft are generally addressed within the broader context of flight planning rather than being a standalone consideration specifically defined within Part 135 operational guidelines. In Part 135 operations, while pilots must certainly compute and confirm fuel requirements in their planning processes, this aspect is part of a more comprehensive review that encompasses other operational factors and regulations.

In contrast, the other options specifically outline key decision points or criteria that are aligned with the regulatory framework governing Part 135 operations. These considerations help determine the viability and safety of the flight plan based on operational specifications and requirements, such as whether an alternate airport is necessary or whether the planned route is permissible under specific operational limits. Thus, while fuel calculation is critical, it does not directly align as a standalone general consideration required for Part 135 flight planning in the same manner as the other options.