''Type 3 mistakes have no such coverage, since they are to be "trained out" of the human, and are presumably thought to be so unlikely as to require no further precaution or remedy.''
Can't speak for TK but the EK accident was definitely Type 3
1- This is the third instance of such an input error in the past 7 years at EK alone (there have probably been many more input errors that were never captured because they did not cause a problem).
2- Input errors into a computer are common, although less so for takeoff data.
3- There may have been contributing factors, such as cockpit interruptions, fatigue or MFF flying, which counter the ''trained out'' possibility. 'Cockpit interruptions' has already been pointed out by the LOSA evaluations, yet no further precautions or remedies were instituted and even now, very little has been done to address this issue. Fatigue is an ongoing problem at EK, one that is hard to quantify especially if there is no intention on the part of management to even acknowledge the possibility. MFF is debatable for sure but it is also a possibility. Add the three together, and who knows the result!