33.1Level 333Repair, maintenance and installation of machinery and equipment33.11Repair and maintenance of fabricated metal products33.12Repair and maintenance of machinery33.13Repair and maintenance of electronic and optical equipment33.14Repair and maintenance of electrical equipment33.15Repair and maintenance of civilian ships and boats33.16Repair and maintenance of civilian air and spacecraft33.17Repair and maintenance of other civilian transport equipment33.18Repair and maintenance of military fighting vehicles, ships, boats, air and spacecraft33.19Repair and maintenance of other equipment