I was flying from Frankfurt to Singapore tonight when i got woken up by stall warnings this morning.
I was cruising at FL410 @ M0.85 after stepclimbing from FL370 initially with a load of around 70% on ground.
The cruise at FL410 was fine for quite a while when it out of the sudden started to veer left and right and started to lose speed.
I’d like to get to know why this happened so I have the knowledge for future overnighters
If needed I can share the replay too.