Is it acceptable to lock excess trash in the lavatory during descent?

Locking excess trash in the lavatory during descent is not acceptable for safety and operational reasons. The lavatories on an aircraft are specifically designated for personal use and should not be used for trash disposal, particularly during descent or landing phases. This practice could lead to hazards, including clutter that may impede access to emergency equipment or create an unsanitary environment.

Moreover, locking trash in the lavatory can cause significant complications during descent, as it could prevent cabin crew from performing necessary safety checks and procedures. The aircraft must be in an orderly state during landing to ensure the safety of all passengers and crew. Therefore, it's crucial to dispose of trash properly and ensure all areas of the aircraft remain accessible and safe prior to landing.