2. Replacement of bulbs and lights.
Seriously, who writes these CASA regs? How do the pilots get tools through the x-ray machines or get access to the maintenance manual to know which circuit breakers to pull, which parts to fit*, etc.
*The reason why the light is broken may be because the wrong bulb was fitted in the first place.
Doesn't lamp removal invariably involve the removal of a part and the disassembly of a light assembly?