but they both have product-liability and therefore , one assumes, insurance for same.
The standad products liability insurance wording excludes parts for aircraft. The specialist supplier will have made special arrangements not so the general dealer.
a. any products relating to aircraft, including missiles or spacecraft, and any ground support or control equipment used in connection with such products
b. any products installed in aircraft, including missiles or spacecraft, or used in connection with such craft, or for tooling used in their manufacture including ground-handling tools and equipment, training aids, instruction manuals, blueprints, engineering or other data, advice and services and labour relating to such craft or products