To reach the 2411 Arc at 24:11 the pilot would have had to access autopilot:
1]to increase the speed if he wanted to stay on the same course OR
2]to change his course a little to the east but maintain the same speed OR
3]to slow the speed and and change the direction eastward along with a probable gradual descent.
Any way you go the autopilot would have had to been turned off, accessed and reprogrammed, before being turned on again at that point to get it to the 2411 Arc at 24:11 — meaning that somebody hadn’t succumbed to hypoxia at that point and they were just not taking calls when ground control called them at 23:13 am for their morning wake-up call.
If at S25E91 @2241 at 22:41 the pilot changed course and speed to the east to the light to the rising sun toward Perth the plane would have reached the 2411 Arc after 583 miles @389mph at:
S27.5E100 — start looking there along the 2411 Arc to the southwest
Most likely route of MH370 from the report:
17:19 — N7E103.5 [point of turnaround] @ 17:19
**** — N5.3E100.3 [Penang Island] 251 miles then northwest for 382 miles
18:25 — 4 minutes SE of N7E95 travelling @542mph
18:29 — N7E95 [633 miles & 70 minutes from point of turnaround]
18:29 — N7E95 [point of turn south]
19:41 — S2E93 — 637 miles @ 531mph
20:41 — S9.75E92.5 — 536 miles @536mph
21:41 — S17.5E92 — 536 miles @536mph
22:41 — S25E91 — 522 miles @522mph [autopilot likely disengaged here]
24:11 — S37E88.75 — 839 miles @559.3mph [same heading but higher mph]
24:11 — S36.25E89 — 786 miles @524mph [same heading but still too fast and outside the central search area]
24:11 — S30E97.5 — 527 miles @351mph [east and slower and center of search area]
24:11 — S27.5E100 — 583 miles @389mph [more eastward toward Perth and NE edge of search area]