JAKARTA, Indonesia — The families were still mourning relatives lost in the crash of Lion Air Flight 610 in Indonesia when they were crammed into a hotel conference room a few weeks after the crash. Sign this form, they were told by employees of the low-cost carrier, and they would receive 1.3 billion rupiah, or $91,600.

For those who lost breadwinners in the crash on Oct. 29, the money, government-mandated compensation for loss of life in an aviation accident, was welcomed.

But that amount, while not insignificant for desperate families with bills to pay and children to school, was roughly the minimum they were entitled to receive under Indonesian law.

And the conditions imposed by Lion Air before it would disburse the payments were complicated and shocking, with some legal experts questioning their legality.