planning would you need to take it out manually? seems difficult either way. >> as mary said, if you try to knock out acars physically by disabling circuit breakers, that's done down in the compartment. some acars systems can be shut off from the fms system. you have to get into maintenance screens. it's not really shut off. you can put transmission on stand by. that's only available on certain acars. i'm not certain which this aircraft had. it's possible it may have been shut off from the cockpit. more likely as mary pointed out it had to be done intentionally from the compartment which as we talked about before, that compartment is accessible from the cabin. >> then there's another new factor today to test which is what the thai government said we