Repair and maintenance of civilian air and spacecraft

This class includes the repair and maintenance of civilian aircraft and spacecraft.

This class includes:

• repair and maintenance of civilian aircraft (except factory conversion, factory overhaul, factory rebuilding)
• repair and maintenance of civilian aircraft engines

This class excludes:

• factory overhaul and rebuilding of civilian aircraft, see 30.31
• factory overhaul of civilian aircraft engines, see 30.31
• repair and maintenance of military fighting vehicles, aircraft and spacecraft, see 33.18