According to flight regulations, what must pilots complete before using any Standard Deviation Procedure (SDP)?

Prior to utilizing any Standard Deviation Procedure (SDP), pilots are required to receive authorization from Major Commands (MAJCOMs). This regulation ensures that pilots are operating under the necessary compliance and guidelines set forth by their respective command structure, which oversees the specific rules and standards applicable to their operations. Authorization serves as a confirmation that the pilots are adequately briefed and certified to conduct flights utilizing these specialized procedures.

The necessity for authorization is particularly important for SDPs, as these procedures may involve deviations from standard operations to accommodate unique mission requirements or operational needs. Gaining proper clearance from MAJCOMs ensures that all safety considerations and competencies have been evaluated and approved, thereby supporting safe flight operations.

Regarding the other options, while completing an emergency checklist, filing a flight plan, and conducting a safety briefing are all important parts of flight preparations and safety protocols, they do not specifically address the requirement for obtaining permission before executing a Standard Deviation Procedure. Thus, they are not prerequisites for SDP use, making the requirement for MAJCOM authorization the correct focus in this context.