CN code 841210 covers reaction engines other than turbojet engines classified under heading 8411. This subheading includes ramjet engines, scramjet engines, pulsejet engines, liquid-fuel and solid-fuel rocket engines, and other engines using the reaction principle to generate thrust. Ramjets have no moving turbine parts and generate thrust by compressing incoming air at high velocity. Rocket engines carry both fuel and oxidiser, enabling operation in the vacuum of space. This subheading covers technologies of strategic and military significance, including propulsion for ballistic and hypersonic missiles. Classification is based on the reaction principle but not the turbojet principle. The General Rules for the Interpretation of the CN apply.

Importing engines under subheading 841210 into the EU is governed by the Union Customs Code and stringent export control regulations. Regulation (EU) 2021/821 on dual-use export controls covers reaction and rocket engine technologies under Categories 7 and 9. The Missile Technology Control Regime (MTCR) restricts transfer of technologies capable of delivering weapons of mass destruction. Import of rocket engines and missile propulsion is subject to national arms trade regulations. Importers must hold an EORI number, submit a customs declaration and present an end-use certificate. Documentation includes an invoice, technical specification, certificates and export licences from the country of origin. Imports from countries under sanctions or embargoes are prohibited. Duty rates should be verified in TARIC.

Reaction engines under subheading 841210 encompass advanced propulsion technologies. Ramjet engines are used in supersonic missiles where high-velocity incoming air is compressed without a mechanical compressor. Scramjet technology (supersonic combustion ramjet) for hypersonic speeds (above Mach 5) is in development. Pulsejet engines are a simpler form of jet propulsion. Liquid-fuel rocket engines (LOX/kerosene, LOX/LH2) power launch vehicles and spacecraft. Solid-fuel rocket engines are used in ballistic missiles and as booster motors. The market is dominated by government programmes in the defence and space sectors. Manufacturers include SpaceX, ArianeGroup, Raytheon, MBDA and Northrop Grumman.

CN code 8412 10 covers other reaction engines. Import into the EU is subject to TARIC duty rates and requires Machinery Directive 2006/42/EC compliance. CN classification depends on the drive type and intended application. Customs clearance requires CE declaration of conformity, commercial invoice and technical specifications.