Which of the following is NOT a part of the NTSBO?

The National Transportation Safety Board (NTSB) outlines specific protocols for handling emergency situations, particularly in aviation. The options presented relate to actions that one might take during such emergencies.

Calling 911 is not considered a part of the NTSB's outlined procedures during an in-flight emergency. The focus of the NTSB's procedures is primarily on assessing the situation, helping others, and evacuating the aircraft if necessary. The rationale is that immediate on-scene response and coordination are generally handled internally by the flight crew and then followed up by emergency responders once they arrive at the scene, rather than relying on a call to emergency services during an ongoing emergency situation.

In contrast, actions like assessing the situation and helping others are crucial steps that are directly advised when managing an in-flight emergency. Evacuating the aircraft is a critical action that follows after assessing the situation and determining it is necessary. This sequence ensures that the safety of all individuals involved is prioritized effectively without unnecessary delays or miscommunication. Thus, while contacting emergency services is important in many scenarios, it does not fall within the direct procedural framework established by the NTSB for immediate response actions.