What should a flight attendant's immediate actions be if a passenger hands them a note stating there is a bomb onboard?

When a flight attendant receives a note indicating the presence of a bomb on board, the most critical and immediate action is to notify the Pilot in Command. This step is vital as the pilot must be informed to make necessary decisions regarding the safety of the flight and its passengers. Turning the cabin lights to full bright allows for better visibility, making it easier to assess the situation and monitor passenger behavior. Making the Explosive Ordnance Disposal (EOD) announcement is also a crucial part of the response protocol, as it alerts other crew members to prepare for possible further actions while maintaining order and safety in the cabin.

This sequence of actions prioritizes the safety of everyone on the aircraft, ensuring that the flight crew is informed, the situation is evaluated correctly, and appropriate emergency protocols can commence without unnecessary panic or distraction. Gathering passengers for reassurance, conducting a search for suspicious items, or contacting ground control may be necessary actions at a later stage but are not the immediate priorities once the threat is identified.