I suggest that there was at least another 60 litres in the system.
Where do you get that from Sid?
Re the rotor brake, a unit once did start a 135 up with the rotor brake applied but I don't think it stopped the donkeys and the blades still turned.
The engines start and the blades do turn if the rotor brake is left on. I know.
the AP just tried to continue the flight?
If by AP you mean the Auto Pilot, the AP doesn't work the collective.
To the poster who asked about AVGAS in one of the tanks, yes, it was a stupid question.