PLA Army Aviation — 2 museum-grade prints from this operator. The Changhe WZ-10, widely marketed internationally as the CAIC Z-10 Fierce Thunderbolt, emerged from a programme accelerated after Gulf War attack-helicopter lessons impressed PLA planners — Harbin Aircraft Industry Group delivered China's first dedicated attack helicopter with tandem seating and stub-wing precision-strike stores rather than repurposed utility airframes. PLA Army Aviation brigades reorganised through the 2017 structural reforms now field mixed attack and transport battalions; the WZ-10 and lighter Harbin Z-19 scout-attack types form the rotary-wing strike layer supporting ground-force manoeuvre. The Harbin Z-19 — nicknamed Black Whirlwind (霹雳火) — entered PLA Army Aviation service from 2012 as a tandem-seat scout-attack helicopter derived from the Z-9 utility lineage, itself a licence-built Eurocopter Dauphin derivative. The Z-19E export variant conducted its maiden flight in May 2017 at Harbin in Heilongjiang province, showcasing refined avionics, mast-mounted fire-control sensors, fenestron tail-rotor shrouding, and stub-wing stores including HJ-10 anti-tank guided missiles.