Which procedure would be followed if there is smoke or fumes in the cockpit but no fire present?

• A. Smoke or fumes procedure
• B. Smoke/fire/fumes procedure
• C. Cabin smoke drill
• D. Oxygen mask deployment procedure

Answer: (A)

When there are smoke or fumes in the cockpit but no fire, the appropriate response is the smoke or fumes procedure. This protocol is built specifically for cockpit environmental issues and guides you to protect your air supply by donning oxygen masks, manage ventilation to limit smoke ingress, identify or isolate the source if possible, and maintain clear communication with ATC and the cabin crew. It prioritizes safe control of the aircraft and crew safety without engaging fire‑fighting actions, since there isn’t a fire to fight.

Using a broader smoke/fire/fumes procedure would be appropriate only if fire is suspected or detected, as it includes firefighting and related steps. The cabin smoke drill is intended for cabin scenarios and training, not actual cockpit response. Focusing only on deploying oxygen masks would miss other critical cockpit actions, such as coordinating with crew, managing systems, and planning diversion if needed.