Hi DW,
The report states that engine behaviour was normal,
If we all agree on the end of recording (impact) at time 339 seconds, then is there any point about discussing when the recording started?
If you look at data on TOME 4, at time 240 secs, the engine N1s (1,2 %)follow the TL positions (Manettes 1,2 DA (angle)). As the TLs are closed (+014 to -0), the engine revs decay slowly from 68% to about 30% - which appears normal.
Between time 328 to 330, the TLs are advanced to the GA position (+45) and the engine revs increase from 29% to 83% by time 334.
The TLs are then closed briefly (-0) at time 336, and then advanced to +25 position at time 338. Meanwhile the engine revs decay from 83% to 56% then back to 86/87% - then end of recording.
It appears that the engines did respond normally (they achieved 83% within 4 to 6 seconds of moving the TLs from idle), but Capt. Asseline thought they had not and briefly closed them seconds before impact.