From what I understand it wasn't a

Posted by sherbert on Tuesday, 3. March 2015 at 07:47 Bali Time:

In Reply to: Interesting response posted by SueK on Monday, 2. March 2015 at 15:05 Bali Time:

shortage of fuel as such but that Garuda was offering its pilots incentives to use and carry less fuel which led them to taking risks.