The NTSB issued three safety recommendations aimed at improving pilot preparedness for smoke-in-cockpit emergencies through realistic, scenario-based training. The recommendations stem from the NTSB’s investigation of a Dec. 20, 2023, incident involving a Southwest Airlines Boeing 737-8. A partial loss of engine power due to bird ingestion in the No. 1 (left) engine, resulted in the activation of the load reduction device to prevent vibration. The load reduction device activation resulted in smoke and fumes entering the cockpit.
The flight crew reported difficulty seeing flight instruments and checklist items as visibility deteriorated within seconds. The pilots donned oxygen masks, completed emergency procedures, declared an emergency and returned to the airport.