BOAC
Bear in mind the TL accidents plus the mishandling incidents reported by Ppruners have only been on a/c with one TR inop. (unless I'm missing something). So is the "mind set" simply a human instinct to not use the inop TR combined with a "retard" warning on unmod a/c that is worse than useless (literally) because it apparently gives you a thumbs up when you have not resolved the problem, if the Taipei explanation is correct?