Where can oxygen masks be found in an aircraft?

Oxygen masks are strategically located throughout the aircraft to ensure the safety of both passengers and crew in the event of a sudden loss of cabin pressure. The correct answer highlights that these masks can be found in the Passenger Service Unit (PSU), lavatories, jumpseats, and crew rest compartments.

In the PSU, the oxygen masks are typically accessible to passengers when needed, allowing for a quick response during emergencies. The presence of masks in the lavatories is crucial for the safety of passengers who may be using these facilities at the time of an emergency. Jumpseats, which are used by crew members during takeoff and landing, are equipped with oxygen masks to ensure that crew members can assist passengers effectively. Additionally, crew rest compartments are equipped with oxygen masks to protect flight attendants who may be resting during long flights.

This widespread availability of oxygen masks across various locations in the aircraft ensures comprehensive readiness and safety for everyone aboard in any emergency situation.