Defence end-use customs exemption applies on a functional,...

Defence end-use customs exemption applies on a functional, end-use basis to missile-warning-system components with a demonstrable nexus to military aircraft; tariff classification is not determinative. The specified imaging lens, sensor front-end and coupling unit qualify in principle as aircraft sub-assemblies and, alternatively, accessories because they are engineered exclusively for a missile-warning system fitted in military helicopters; specified weapon exclusions do not apply. Private defence suppliers may use the exemption, but Condition 17 requires a prescribed Ministry of Defence certificate issued by an officer not below Joint Secretary rank at import. An Indian Air Force end-use certificate alone is insufficient. Each consignment remains subject to mandatory certification and Customs verification.