Rob21, please read the thread.
Best to search for the things about which you wish to make claims, before posting unverified stuff about them.
Originally Posted by Rob21
[...] EPR "split" occurred after reverse on engine #1 was selected. And only then problems began, when ATHR was disengaged.
- When exactly problems began is hard to say, some might say all was well until they hit the building, but possibly at diverging thrust, particularly at the sharp increase in forward thrust on engine #2, around 18:48:24, coinciding with selection of reverse thrust on engine #1.
- Autothrust remained active until 18:48:29, around 5 seconds later, and until after EPR of engine #2 had decreased again.
- Autothrust wasn't disengaged, but automatically disconnected due to an internal failure condition. Please review previous posts by Lemurian and myself, the Taipei-Sungshan-Overrun report, p148, and my
Why-Because-Graph on the matter. Be sure to read the
introductory words by PBL on the analysis.
Bernd