Which of the following is NOT a common error associated with the FTI Precautionary Emergency Landing (PEL) procedures?

The assertion that using an incorrect stall speed for landing calculations is not a common error associated with the FTI Precautionary Emergency Landing (PEL) procedures aligns well with a key understanding of emergency procedures and the training focus provided to pilot trainees.

In the context of PEL, understanding and applying proper stall speeds is critical, as they directly relate to aircraft handling characteristics and safety during landing. Pilots are specifically trained to be aware of their aircraft's performance metrics, including stall speeds, and to use this information accurately when making decisions about landing. Incorrect calculations based on stall speeds generally stem from a lack of understanding or inadequate training, which would likely be addressed thoroughly during training exercises.

The other options involve common mistakes related to PEL procedures, such as managing energy states and aircraft configurations effectively during an emergency landing scenario. Speed brake extension and delaying configuration adjustments can frequently lead to improper energy management, while improper altitude management can affect the approach profile and decision-making for landing. In contrast, using an incorrect stall speed would be unusual among trained pilots, as they are explicitly guided to ensure accurate data usage in emergency settings. This highlights the critical importance of correctly understanding and applying stall speed in operational contexts, making it clear why this option stands apart from the others