Boeing (767) thrust reversal deferral and EICAS messages

[RandomPerson8008]

A question to my fellow aviators regarding the Boeing 767. It might apply to other Boeing types as well, I'm not sure.

In the event of a thrust reverser deferral, several circuit breakers are required to be collared by maintenance in addition to mechanically securing the T/R. This should result in several flight deck indications: a center pedestal "REV ISLN" indicator light illuminated after engine start, a L or R REV ISLN EICAS advisory message, and a L or R REV ISLN Status message.

Now, let's say hypothetically that Maintenance claims to have deferred the T/R on the airplane and complied with their procedure for securing the T/R. However, this status message is not displayed nor is the Center pedestal light or EICAS advisory after engine start. Logically this would lead one to suspect that they had not in fact complied with the procedure to secure the T/R. Maintenance claims that they cleared all these messages in the process of troubleshooting other problems.

What would you do? Refuse the airplane prior to blockout because there is no status message? Return to chocks after engine start because there is no center pedestal light or REV ISLN advisory after engine start? Take them at their word, ignore the Dispatch Deviation Guide (MEL) that states that these messages should be present, and depart as scheduled? Obviously you can check to see that they've collared the circuit breakers, but it is difficult to verify the rest of their tasks.

Thanks.