What must be checked for the flashlight on the EMB?

For the flashlight on the EMB, it is essential to ensure that it is secure in the bracket because this directly impacts the accessibility and reliability of the flashlight in emergency situations. If the flashlight is not properly secured, it may become dislodged during turbulence or other movements, rendering it useless when needed most. Moreover, a securely fastened flashlight will be readily available for any crew member trying to access it in low-light situations or during an emergency.

While it is indeed important to ensure that the flashlight is operational, has a functioning bulb, and that the battery indicator is checked, securing the flashlight focuses on maintaining its intended accessibility. Operational capability and functionality can be rendered moot if the flashlight cannot be retrieved or utilized during a critical time due to being loose or improperly stored. Therefore, checking that it is secure in its bracket is a primary concern for safety and efficacy in emergencies.