Which of the following was not included as a limitation to Terrain Flight?

The correct choice is that insufficient mission planning time was not included as a limitation to Terrain Flight. This indicates that while mission planning is crucial for the success of any flight operation, the specific context of Terrain Flight emphasizes factors more directly tied to the operational environment rather than the preparatory phase of a mission.

In Terrain Flight operations, pilots are often required to navigate through complex landscapes at low altitudes, which inherently introduces challenges such as line-of-sight radio limitations, increased workloads due to the need for constant vigilance and rapid decision-making, and various stress factors related to flying in demanding environments. The focus of limitations in this scenario tends to be on the operational challenges faced during flight rather than how long pilots take to prepare before flying.