I was laying over in the Caribbean. Inbound crew brought in our aircraft with TCAS MCO'd and a note on my outbound flight plan that said OCC approved flight w/MCO.

I looked in the MEL and it seemed to me that TCAS was required for flights TO the Caribbean in RVSM airspace. MEL said I was fine to bring it home.

Can the OCC waive something like that? I've looked in the AIM and I can't find anything specific. Inbound crew said TCAS was broken prior to dispatch. (They went on a long flight with a broken first class lav, too.)