American Airlines A321 Drops Engine Part on San Francisco Runway: During take-off from Runway 01R, a plume of smoke was observed from the aircraft’s left engine, later identified as an International Aero Engines (IAE) V2500. Ground authorities conducted an immediate runway inspection, recovering a thrust reverser liner—a critical component of the engine’s thrust reverser system. The aircraft climbed to a cruising altitude of FL350 and completed its three-hour flight to DFW without further incident, landing safely. American Airlines confirmed the mechanical issue but emphasized that it did not compromise flight safety.