Turbomeca Palouste IV is a historical aviation engine identity. EASA identifies the exact model in the Sud-Ouest SO 1221 helicopter type-examination context and records its Turbomeca type-certificate cancellation on 23 March 2005. Safran’s corporate history identifies Turbomeca as the predecessor of Safran Helicopter Engines; this record preserves the narrow historical identity without asserting a more specific propulsion kind, rating, vehicle installation, family, or current lifecycle.