readywhenreaching:
I know of no FAA inspection requirement for condition of equipment used by ground handlers. SFO has just started a random ground equipment inspection program that has forced the upgrade of some items (steam clean/leak check) used by the major ground handler here (same one as MCO). Otherwise, it's up to the local airline station manager to have some idea what equipment is being used on their aircraft, which is usually driven by the delay rate.
Since the EI "station manager" in SFO is an employee of the ticket counter handling agency (no idea if that is the case in MCO) you will get an idea of the level of scrutiny. That being said, the hydraulic system on a lower-deck loader is a nightmare, and you never know when something will let go. Generally you get a large puddle of fluid on the ramp and then the loader is dragged off the aircraft.