Hello folks...
Consider this scenario:
During taxi, a friend of mine saw that the TCAS TRAFFIC selector (THRT/ALL/ABV/BLW) litteraly fell from it's place. Somehow the thing broke on it's base... The TCAS was then stuck on ABV mode.
Such situation is not covered by our MEL... But it's something that does not affect the airworthiness of the acft, thus,
AFAIK, a GO ITEM.
How could the acft be further dispatched in such situation? Would that become NEF item?