A National Airlines Boeing 747-400 executed a safe emergency landing at Frankfurt-Hahn Airport on 13 July 2026 after declaring an air emergency due to hydraulic system failure. The aircraft lost hydraulic oil shortly after departing Italy, prompting a PAN-PAN declaration and a larger rescue response at the German cargo hub. No injuries occurred, and emergency services issued an all-clear following the touchdown. The incident underscores operational risks for operators flying older 747-400 freighters on long-haul routes, particularly regarding hydraulic integrity under sustained cruise loads. While the registration remains unconfirmed in initial reports, the event highlights the critical need for robust maintenance protocols on legacy airframes carrying heavy cargo loads across European diversion corridors.