It seems
stilton was right,
According to abc news in australia "
Cathay Pacific said in a statement that the plane's left engine had shut down as the aircraft made its landing approach at Hong Kong's international airport on Tuesday with 309 passengers on a flight from Surabaya in Indonesia.
The right engine also began to "cut out inexplicably, leaving the [pilots] to cope with dips and surges in power and the prospect of the plane plunging into the sea short of [the airport]," the South China Morning Post reported."