Final answer:
In suspected toxic exposure while in flight, it's crucial to first don oxygen masks, then consult the emergency procedures manual, notify the flight crew for an emergency landing, and administer first aid to affected individuals.
Step-by-step explanation:
In the event of a suspected toxic exposure while in flight, the immediate action measures in order are:
- Don oxygen masks and ensure oxygen supply for all occupants, including the affected individuals, as this step assures that everyone is receiving clean air and mitigating further inhalation of potentially toxic substances.
- Consult the aircraft's emergency procedures manual for specific instructions and protocols in dealing with the suspected toxic exposure.
- Notify the flight crew and request an emergency landing, so that the affected individuals can receive professional medical attention as soon as possible.
- Administer first aid to affected individuals, which could include CPR if necessary and providing additional oxygen if available, in accordance with the training and resources present on the aircraft.
The priority is to secure safety and health of all individuals on board, starting with securing breathable air by donning oxygen masks, followed by following the aircraft's emergency protocols, alerting the crew for emergency procedures, and providing immediate medical assistance to those affected.