What should be done if fuel vapour is detected inside the aircraft?

When fuel vapour is detected inside the aircraft, notifying the flight deck immediately is crucial due to the potential safety implications. Flight crew has the training and authority to assess the situation properly and initiate necessary emergency procedures. They can communicate with ground control and emergency services if needed, making quick decisions to ensure the safety of passengers and crew.

Failing to notify the flight deck or choosing to ignore the situation could result in a serious escalation, as fuel vapour within the aircraft can pose significant risks, including fire hazards. Waiting for instructions from a ramp agent or opting for an immediate evacuation without warning is not advisable in this context, as it could lead to confusion or mismanagement of the emergency situation. Prompt communication with the flight deck enables them to take appropriate actions and maintain safety protocols.