If the jet is u/s, let the pax know. Do you really think that they are going to be afraid of a technical hitch.
Having seen a pax who was nervous enough about flying being told that the "jet" was u/s then refuse to fly......
.......and he was an ATLO!!!
As for TG Nos - wasn't it the lower the number the earlier you were killed off in TACEVALs?