Which crew member has the duty of ensuring ELT devices are operational before flight?

The correct answer highlights the responsibility of the No 1 crew member, often referred to as the Cabin Manager or Lead Flight Attendant, in ensuring that Emergency Locator Transmitter (ELT) devices are operational before flight. The No 1 plays a crucial leadership role in overseeing cabin safety and ensuring that all safety equipment, including ELTs, is in working order prior to departure. This responsibility is part of their broader duty to ensure the safety and security of both passengers and crew throughout the flight.

In aviation safety protocols, it is vital that specific crew members are assigned to check life-saving equipment like the ELTs since they are essential for locating an aircraft in the event of an emergency. By having the No 1 crew member take on this task, there is clear accountability and a systematic approach to safety checks before takeoff. This ensures that the necessary procedures are completed thoroughly, contributing to the overall safety of the flight.

The other options either fail to assign specific accountability or spread it across all crew members, which may lead to oversight or lack of responsibility. Assigning this duty to a designated crew member facilitates a more organized and effective safety protocol.